• 15% off any 2+ products — automatically applied at checkout
  • Handmade in our studio
  • Luxury 350gsm textured card
Personalised greeting cards, handmade in our studioUnited Kingdom · GBP £

21st funny birthday card

(43 customer reviews)

£3.10

15% OFF 2+ PRODUCTS

Mix & match any products

Discount automatically applied at checkout
Optional — leave blank if you would prefer the card blank inside.
Quantity

Description

Funny 21st Birthday Card – Hilarious Mayo-Themed Birthday Card

Celebrate their 21st birthday with a laugh and a little humor! This funny 21st birthday card features a quirky mayo-themed design that’s sure to bring a smile to their face. Perfect for anyone who loves a good laugh, this card adds a fun twist to their milestone celebration.

✨ Why You’ll Love This Card:
✔ Unique & Funny Design – A playful mayo theme for a one-of-a-kind birthday card.
✔ High-Quality – Printed on 350gsm cardstock (14.8cm x 14.8cm) for a premium feel.
✔ Blank Inside – Write your own personal, funny message or keep it simple.
✔ Eco-Friendly – Made with FSC-certified & recycled materials.
✔ Complete Set – Comes with a stylish Kraft envelope.
✔ Secure Packaging – Shipped in a rigid ‘Do Not Bend’ envelope for protection.

📦 Fast & Reliable Delivery:
• Dispatched next working day via Royal Mail for quick delivery.

Make their 21st birthday extra memorable with this funny and quirky card that will surely stand out! 🎉✨ Why you will Love This Card:
✔ Premium Quality – Printed on 350gsm luxury cardstock (14.8cm x 14.8cm).
✔ Personalised Option – Choose to have a message printed inside.
✔ Eco-Friendly – Made with FSC-certified & recycled materials.
✔ Blank Inside as standard – Perfect for your own heartfelt message.
✔ Complete Set – Includes a stylish Kraft envelope.
✔ Secure Packaging – Shipped in a rigid ‘Do Not Bend’ envelope for protection.

📦 Fast & Reliable Delivery:
• Dispatched next working day via Royal Mail for quick delivery (by request).✨ Why you will Love This Card:
✔ Premium Quality – Printed on 350gsm luxury cardstock (14.8cm x 14.8cm).
✔ Personalised Option – Choose to have a message printed inside.
✔ Eco-Friendly – Made with FSC-certified & recycled materials.
✔ Blank Inside as standard – Perfect for your own heartfelt message.
✔ Complete Set – Includes a stylish Kraft envelope.
✔ Secure Packaging – Shipped in a rigid ‘Do Not Bend’ envelope for protection.

📦 Fast & Reliable Delivery:
• Dispatched next working day via Royal Mail for quick delivery (by request).✨ Why you will Love This Card:
✔ Premium Quality – Printed on 350gsm luxury cardstock (14.8cm x 14.8cm).
✔ Personalised Option – Choose to have a message printed inside.
✔ Eco-Friendly – Made with FSC-certified & recycled materials.
✔ Blank Inside as standard – Perfect for your own heartfelt message.
✔ Complete Set – Includes a stylish Kraft envelope.
✔ Secure Packaging – Shipped in a rigid ‘Do Not Bend’ envelope for protection.

📦 Fast & Reliable Delivery:
• Dispatched next working day via Royal Mail for quick delivery (by request).✨ Why you will Love This Card:
✔ Premium Quality – Printed on 350gsm luxury cardstock (14.8cm x 14.8cm).
✔ Personalised Option – Choose to have a message printed inside.
✔ Eco-Friendly – Made with FSC-certified & recycled materials.
✔ Blank Inside as standard – Perfect for your own heartfelt message.
✔ Complete Set – Includes a stylish Kraft envelope.
✔ Secure Packaging – Shipped in a rigid ‘Do Not Bend’ envelope for protection.

📦 Fast & Reliable Delivery:
• Dispatched next working day via Royal Mail for quick delivery (by request).

43 reviews for 21st funny birthday card | Mayo, twenty one funny birthday card for him, her, funny, friend card, birthday card, silly card

  1. sassydan –

    Love this card, great quality and arrived on time 🙂

  2. Kathryn –

    Perfect, such a sweet gift! Thank you!

  3. Joyce –

    Really good quality and service

  4. Emma –

    Great card. Thank you. Speedy delivery aswell.

  5. Emma –

    Perfect for a 21st Birthday. Lovely quality. Thank you ♡♡

  6. Rossie –

    Just fab great quality card!

  7. Caroline –

    Just as described and really fast delivery.

  8. Kate Follan –

    Fabulous card! Great quality too. Let’s support small businesses in the uk 🤍

  9. Jolene –

    Happy with quality of card

  10. Sign in with Apple user –

    Great item would highly recommend.

  11. Amanda –

    Amazing item very quick delivery

  12. Ellen –

    Brilliant card, perfect for my nephew

  13. danielle.lori –

    Lovely card, great quality and arrived in perfect condition. Very happy with it!

  14. Beth –

    Perfect card my best friend who adores mayo found it hilarious

  15. karen –

    Loved this card for my son’s birthday. I would definitely buy from this company again 😊

  16. Alex –

    Great product, would buy again

  17. Chloe –

    Exactly what I was looking for! Great quality and good size too! 🙂

  18. Amie –

    Great quality and item matched the description perfectly

  19. gayle –

    Great card for a 21 birthday . Still laughing

  20. Sarah –

    Good card arrived on time, pleased with purchase.

  21. Sarah –

    Great quality, very appropriate card for my needs.

  22. Megan –

    Perfect! Would definitely buy from this shop again x

  23. Martin –

    Great card – fast service,received promptly in perfect condition

  24. Bradie –

    never turned up , very disappointed

  25. thomas –

    Really fast delivery great card thank you !

  26. Sophie –

    The quality of the item is really good. The customer service I got to ensure my order arrived on time was also very good. Will definitely be using this store again!

  27. Neal –

    As excepted and delivered on time

  28. alison –

    Item as described. Thank you

  29. Ben –

    The product was high quality and exactly as described. No issues!

  30. ally –

    great card, arrived promptly .

  31. Keira –

    This will be a huge hit!

  32. Sarah –

    A great product for a mayo lover turning 21.

  33. Charlotte –

    Fast shipping, great quality, funny card.

  34. Donna –

    Good quality card.pleased with product

  35. Ellen –

    Great quality and fast delivery, recipient loved it.

  36. Margaret –

    EXCELLENT SERVICE CANNOT RECOMMEND THEM ENOUGH

  37. Jade –

    Perfect item, was a hit for the birthday!

  38. Charlotte –

    Lovely card – very good quality and the print quality is great too. Arrived very quickly – thank you!

  39. Maisie –

    love it looks exactly like the picture

  40. Sign in with Apple user –

  41. Emma –

    Great funny card my step daughter smiled when opening it

  42. pokeno –

    This is a high quality card, just as described. It shipped quickly, and was carefully packaged. I’m very happy with my purchase.

  43. Fiona –

    Loved this card and different to others I had seen.

Only logged in customers who have purchased this product may leave a review.

Delivery & Postage

Our cards are handmade to order and dispatched the next working day.

UK postage options
Delivery servicePrice
Royal Mail 2nd Class£0.95
Royal Mail 1st Class£1.90
Royal Mail Special Delivery£6.90

Shipping Costs

Postage is calculated at checkout based on your chosen delivery option, so you can see the full cost before placing your order.

Important Note

We do our best to get your card to you as quickly as possible. Royal Mail 1st and 2nd Class delivery times are estimates, not guaranteed arrival dates. Bad weather and delays in the postal network can sometimes affect delivery.

Royal Mail Special Delivery is subject to Royal Mail's service terms and postcode exceptions. Please allow for our next-working-day dispatch time as well as delivery time.

For more information or help with a delivery question, please contact us.

Birthday Cards Online

Find the perfect personalised birthday card, from funny designs to thoughtful milestone cards for all the people who matter most.

Personalised Greeting Cards

Beautiful cards for new babies, congratulations, thank-yous and life’s meaningful everyday moments—made especially for them.

Wedding & Engagement

Celebrate their happy news with our collection of wedding and engagement cards, personalised inside and out.

4.9★★★★★Rated 4.9 out of 5 from over 16,000 customer reviews

Let’s keep in touch

Be the first to hear about new card designs, seasonal collections and occasional treats.

Follow us on Instagram

Your daily dose of card inspiration, new designs and little moments worth celebrating.

Follow us

Follow us on TikTok

Behind-the-scenes peeks, handmade cards and a little Artsy humour to make you smile.

Follow us