What Can I Write On 21st Birthday Card?


By Bruno Crnik

A 21st birthday is a milestone that marks the transition from adolescence to adulthood. It is a significant occasion in many cultures and is often celebrated with great enthusiasm and excitement.

This is the age when a person officially becomes an adult and is legally able to do many things such as vote, drink alcohol, and enter into certain contracts.

The 21st birthday is a rite of passage for many young adults and holds a special significance in their lives. It symbolizes the beginning of new opportunities, responsibilities, and experiences. It is also a time to reflect on the past and look forward to the future.

When writing a 21st birthday card, it is important to acknowledge the significance of this occasion and convey your heartfelt wishes and sentiments.

Here are some ideas on what to write in a 21st birthday card:

  1. Personal Memories and Inside Jokes: Share a funny or heartwarming memory you have with the person and make them feel special with a personal inside joke only the two of you would understand.
  2. Wishes and Congratulations: Congratulate them on reaching this significant milestone and express your best wishes for their future.
  3. Words of Wisdom and Advice: Offer some words of wisdom or share valuable advice for this new chapter in their life.
  4. Funny Messages and Puns: Make them smile or laugh with a clever pun or humorous message.
  5. Inspirational Quotes and Messages: Share an inspiring quote or message to motivate them for their future endeavors.
  6. Acknowledgments and Gratitude: Thank them for being a part of your life and express your gratitude for their friendship.

While it is important to make the birthday person feel loved and appreciated, there are some things to avoid when writing a 21st birthday card:

  1. References to Age and Aging: Avoid mentioning their age or making jokes about getting older, as this may make them feel self-conscious or anxious about aging.
  2. Insensitive or Offensive Jokes: Be mindful of the person’s feelings and avoid any jokes that may be hurtful or inappropriate.
  3. Negative or Critical Comments: This is a time to celebrate and uplift the person, so avoid any negative or critical comments.
  4. Generic and Overused Messages: Try to make your message personal and avoid using generic or overused phrases that may come across as insincere.

To make a 21st birthday card extra special, consider these ideas:

  • Personalize the Design and Message: Create a unique card with a custom design that reflects the person’s personality and add a heartfelt message.
  • Include Photos and Mementos: Add some photos and mementos to the card to make it more personal and meaningful.
  • Add a Special Gift or Surprise: Consider adding a small gift or surprise inside the card to make it even more special.
  • Plan a Celebration or Activity: Plan a special celebration or activity to make their birthday even more memorable and enjoyable.

Key Takeaways:

  • Make it personal with memories and inside jokes.
  • Send wishes, congratulations, and words of wisdom.
  • Avoid references to age, offensive jokes, and generic messages.

What is a 21st Birthday?

A 21st birthday is a momentous occasion in a person’s life as it signifies their official transition into adulthood. It is a celebration of their coming of age and represents newfound independence and responsibilities.

Reaching the age of 21 grants legal privileges such as the right to vote, purchase alcohol, and make important life decisions. It’s a time to reflect on the past and look towards the future with excitement and anticipation.

Some suggestions for a 21st birthday card message could include:

  • Words of encouragement
  • Well wishes for the journey ahead
  • Reminders to embrace the joys and challenges of adulthood


Why is the 21st Birthday Significant?

Turning 21 is an important milestone as it marks the transition into adulthood. This particular birthday symbolizes newfound independence, legal rights, and responsibilities. At 21, individuals are typically considered adults and have the legal ability to vote, consume alcohol, and enter into contracts. It is a time for both celebration and reflection on one’s journey towards adulthood.

When writing a message for a 21st birthday card, consider wishing the recipient a memorable celebration, encouraging them to responsibly embrace their newfound independence, and expressing excitement for the adventures and opportunities that await them in adulthood.


What to Write in a 21st Birthday Card?

A 21st birthday is a milestone event that marks the transition into adulthood. It is a time for celebration, reflection, and looking towards the future. When it comes to writing in a 21st birthday card, there are many different directions you can take. In this section, we will explore some ideas and suggestions for what to write in a 21st birthday card. From personal memories to words of wisdom, there are endless ways to make your message meaningful and memorable for the recipient.

1. Personal Memories and Inside Jokes

  1. Include personal memories and inside jokes that you share with the birthday person.
  2. Recall funny or memorable moments that you have experienced together.
  3. Mention inside jokes or references that only the two of you would understand.
  4. Share heartfelt stories or anecdotes that highlight the birthday person’s personality or achievements.
  5. Write a message that reflects your unique relationship and the special bond you share.
  6. Use a playful and lighthearted tone to make the birthday card more enjoyable.


  • “Reminisce on all the inside jokes and memories we’ve shared. Happy birthday to my partner in crime and best friend!”
  • “To the one who always knows how to make me laugh, happy birthday! Here’s to more inside jokes and unforgettable moments.”
  • “As we celebrate your special day, let’s look back on all the inside jokes and memories that make our friendship so special. Happy birthday!”

2. Wishes and Congratulations

When writing wishes and congratulations for a 21st birthday card, consider the following steps:

  1. Start with a warm and heartfelt opening to convey your excitement and well wishes.
  2. Reflect on the person’s achievements and growth, highlighting their accomplishments and milestones.
  3. Express your admiration and pride for the person they have become.
  4. Offer words of encouragement and support for their future endeavors.
  5. Share your hopes and wishes for their 21st year, emphasizing joy, success, and fulfillment.
  6. End with a memorable closing, reminding them of your love and support.

Remember, the key is to personalize your message and make it meaningful to the individual. Consider incorporating inside jokes or shared memories to make it extra special. Have fun crafting your message and celebrating this milestone!

3. Words of Wisdom and Advice

When writing words of wisdom and advice in a 21st birthday card, it’s important to offer guidance and encouragement for the future. Here are some steps to consider:

  1. Reflect on personal experiences and life lessons.
  2. Offer advice on pursuing dreams and setting goals.
  3. Encourage self-discovery and embracing new experiences.
  4. Discuss the importance of resilience and learning from failures.
  5. Emphasize the value of relationships and meaningful connections.
  6. Share insights on finding balance and taking care of oneself.

4. Funny Messages and Puns

If you’re looking to add some humor to a 21st birthday card, consider including funny messages and puns. Here is a list of ideas to get you started:

  • “Happy 21st birthday! They say age is just a number, so let’s keep it a secret and enjoy being forever young!”
  • “Congratulations on turning 21! Now you’re legally allowed to do all the things you’ve been doing since you were 16.”
  • “Turning 21 is like unlocking the cheat codes of life. Enjoy the perks and level up with each drink!”
  • “Cheers to 21 years of surviving this crazy world! Now let’s drink to celebrate, because adulting can be tough.”
  • “Happy 21st! Remember, you’re not getting older, you’re just increasing your value as a vintage masterpiece.”
  • “They say wisdom comes with age, but in your case, it’s more like a fine wine. Cheers to 21 years of becoming more refined!”

5. Inspirational Quotes and Messages

Choosing inspirational quotes and messages for a 21st birthday card can add meaning and encouragement to the recipient’s special day. Here are some ideas to consider:

  • “May your 20s be filled with adventure, growth, and endless possibilities.”
  • “Embrace this new chapter of your life with open arms and a positive mindset.”
  • “Dream big, work hard, and never stop believing in yourself. Happy 21st birthday!”
  • “Congratulations on reaching this milestone. Remember, the sky’s the limit!”
  • “May you find the courage to chase your dreams and the strength to overcome any challenges that come your way.”
  • “Here’s to a future filled with success, happiness, and the fulfillment of all your goals.”

6. Acknowledgements and Gratitude

When composing a card for someone’s 21st birthday, it’s important to express acknowledgements and gratitude to make it even more special. Show your appreciation for their presence in your life and the memories you’ve shared. Thank them for their friendship, support, and the happiness they bring. Highlight specific qualities or actions you admire and express gratitude for their impact on your life. For instance, you could write, “I am truly grateful for your kindness, sense of humor, and unwavering support throughout the years. Thank you for being an amazing friend and creating unforgettable memories together.”


What to Avoid Writing in a 21st Birthday Card?

As we celebrate the milestone of a 21st birthday, it’s important to consider the words we use in a birthday card. While it can be tempting to make jokes about age or poke fun at the person reaching this new stage in life, it’s important to avoid certain writing pitfalls. In this section, we’ll discuss what to avoid writing in a 21st birthday card, including references to age, insensitive jokes, negative comments, and generic messages that lack personalization. Let’s make sure our birthday wishes are thoughtful and uplifting for this special occasion.

1. References to Age and Aging

When writing a 21st birthday card, it’s important to avoid mentioning age and aging to make the recipient feel more positive and celebrated. Here are some steps to follow:

  1. Focus on the future: Write about the exciting adventures and opportunities that lie ahead.
  2. Highlight achievements: Acknowledge the accomplishments and milestones the person has already achieved.
  3. Share aspirations: Encourage the individual to dream big and pursue their goals.
  4. Emphasize youthfulness: Celebrate their youthful spirit and energy without making any references to age.
  5. Express admiration: Compliment their growth, maturity, and potential.

2. Insensitive or Offensive Jokes

When composing a 21st birthday card, it’s crucial to steer clear of insensitive or offensive jokes. This is a significant milestone birthday and should be honored with positivity and consideration. Instead, concentrate on uplifting and sincere messages that convey your love, support, and good wishes for the recipient. Share cherished memories, offer congratulations, provide words of wisdom, or include inspirational quotes. By avoiding insensitive humor, you can ensure that your birthday card is thoughtful and meaningful, making the recipient feel cherished on their special day.

3. Negative or Critical Comments

When composing a 21st birthday card, it’s crucial to steer clear of any negative or critical remarks that may put a damper on the celebratory spirit. Instead, focus on positive and uplifting messages that honor the milestone and the individual’s achievements. Refrain from criticizing their decisions or pointing out any flaws. Instead, offer words of encouragement, support, and admiration.

Keep in mind that this is a time for celebration and positivity, so maintain a light-hearted and optimistic tone. By avoiding negative or critical comments, you can ensure that your birthday card brings joy and happiness to the recipient.

4. Generic and Overused Messages

When writing a 21st birthday card, it’s important to avoid generic and overused messages to make it more meaningful and personal. Here are some steps to follow:

  1. Avoid cliches: Stay away from commonly used phrases and messages that lack originality.
  2. Be specific: Instead of generic wishes, mention specific qualities or memories that make the person special.
  3. Use humor wisely: Incorporate unique funny messages or jokes that reflect your relationship with the person.
  4. Be sincere: Write heartfelt messages that convey your genuine thoughts and emotions.
  5. Share personal anecdotes: Include stories or memories you’ve shared together to make the message more personal.
  6. Highlight their achievements: Acknowledge the person’s accomplishments and celebrate their growth.


How to Make a 21st Birthday Card Extra Special?

A 21st birthday is a milestone occasion that marks the transition into adulthood. Whether you are creating a birthday card for a friend, family member, or significant other, you want it to be extra special. In this section, we will discuss how you can make a 21st birthday card stand out by personalizing the design and message, incorporating photos and mementos, adding a special gift or surprise, and planning a celebration or activity to make their day truly memorable. Let’s dive in and make their 21st birthday one to remember!

1. Personalize the Design and Message

Adding a personal touch and meaningful message to a 21st birthday card can make it even more special. Consider these steps to personalize the card:

  1. Choose a design that reflects the recipient’s personality, such as their favorite colors or hobbies.
  2. Include a heartfelt message that expresses your wishes and celebrates their milestone.
  3. Add personal touches, like inside jokes, memories, or shared experiences, to make the card unique to your relationship.
  4. Use special materials, like glitter, stickers, or ribbons, to enhance the visual appeal of the card.
  5. Handwrite the message instead of using a printed one to show your thoughtfulness.

Pro-tip: For an extra special touch, consider creating a custom-made card using online design tools or crafting supplies.

2. Include Photos and Mementos

Including photos and mementos in a birthday card adds a personal touch and allows the birthday person to relive cherished memories. Here are some steps to follow:

  1. Select meaningful photos that capture special moments shared with the birthday person.
  2. Print the photos in various sizes to add visual interest.
  3. Create a collage by arranging the photos on the card with decorative tape or glue.
  4. Add small mementos, such as ticket stubs or handwritten notes, that hold sentimental value.
  5. Write captions or short descriptions next to each photo to tell the story behind the moment.
  6. Consider using photo editing apps or filters to enhance the images before printing.

3. Add a Special Gift or Surprise

To make a 21st birthday card extra special, consider adding a special gift or surprise. Here are some steps to follow:

  1. Choose a gift that reflects the recipient’s interests and personality, such as a favorite book, a piece of jewelry, or a personalized item.
  2. Wrap the gift in a creative and unique way, using colorful wrapping paper or adding a personalized touch with ribbons or stickers.
  3. Include a handwritten note inside the card, expressing your heartfelt wishes and explaining the meaning behind the gift. This adds a personal and thoughtful touch to the overall surprise.
  4. If possible, arrange for a surprise element, such as organizing a small gathering with close friends or arranging a special activity or experience. This will make the recipient feel even more loved and celebrated on their special day.

Remember, the key is to make the recipient feel loved and celebrated on their special day. Consider their preferences and plan a surprise that will bring them joy and create lasting memories.

4. Plan a Celebration or Activity

Planning a celebration or activity for a 21st birthday can make the occasion even more memorable. Here are some steps to consider:

  1. Choose a theme or concept that reflects the birthday person’s interests or passions.
  2. Select a suitable venue or location that complements the chosen theme, such as their favorite restaurant, an outdoor park, or a rented event space.
  3. Decide on the type of celebration, whether it’s a formal dinner, casual gathering, or themed party.
  4. Plan entertainment, such as hiring a DJ, arranging live music, or organizing fun games and activities.
  5. Create a guest list and send out invitations, making sure to include all important details regarding date, time, and location.
  6. Arrange for food and drinks, taking into consideration the preferences and dietary restrictions of guests.
  7. Decorate the venue or space according to the chosen theme, incorporating personalized touches and decorations.
  8. Prepare a schedule or itinerary for the event, including any special speeches, toasts, or activities that will take place.
  9. Coordinate transportation if necessary, ensuring that guests can easily reach the location and return home safely.
  10. Finally, have a backup plan in case of unexpected changes or weather conditions.

Frequently Asked Questions

What can I write in a 21st birthday card for my best friend who loves to party?

You can write a funny message referencing their love for partying, such as “Cheers to finally legal fun (if you can remember it)!” or “Hakuna Ma Vodka – it means no worries for the rest of your 21st birthday!” Be sure to include a heartfelt message about your friendship and best wishes for the future.

What is a good message to write in a 21st birthday card for my daughter?

For your daughter’s 21st birthday, you can write a heartfelt message expressing your pride in her and all that she has accomplished. You can also include a reference to her entrance into adulthood, such as “Welcome to the world of responsibility, but never lose your sense of fun. Happy 21st birthday, my beautiful daughter.”

What are some ideas for a unique 21st birthday card message?

You can personalize the message by including specific details or memories, such as an inside joke or a reference to a shared experience. You can also play on the theme of turning 21, such as “No more fake ID needed, but remember to drink responsibly!” or “Turning 21 is a big deal – cheers to the perfect age of fun and responsibility!”

What is a good birthday card message for a 21-year-old who is like a sister to me?

For a close friend or “sister” who is turning 21, you can write a heartfelt message expressing your love and appreciation for their friendship. You can also include a funny message referencing your bond, such as “Growing up with you was barrels of fun – now we get to do it legally!” or “We may not have the same parents, but we have the same taste in friends. Happy 21st birthday to my BFF!”

What can I write in a 21st birthday card for my son who is turning 21?

For your son’s 21st birthday, you can write a message congratulating him on hitting such a big milestone and entering adulthood. You can also include a reference to famous achievements at 21, such as “You’re in good company with Jane Austen and Steve Jobs – now go write your own story. Happy 21st birthday, son!”

What’s the best way to wish someone a happy 21st birthday in a card?

The best way to wish someone a happy 21st birthday in a card is to write a heartfelt and sincere message that reflects your relationship with the recipient. You can also include a small gift, such as a fortune cookie pearl necklace or a lottery ticket, to make it extra special. Remember to express your love and best wishes for their future as they enter adulthood.