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Funny 21st Birthday Card - Immature

4.9 out of 5 stars rating
17270 Total Reviews |
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Paper Type
Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
+CA$0.91
+CA$0.91
-CA$0.24
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About Folded Greeting Cards

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Folded Greeting Card
Create your own from scratch

Size: Standard, 5" x 7"

Thank you, hello, or I love you, custom greeting cards are thoughtful gifts that are always the perfect way to express yourself.

  • Dimensions: 5" x 7" (portrait); 7" x 5" (landscape)
  • Full colour CMYK print process
  • Double sided printing for no additional cost

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

  • Exclusively made for Zazzle
  • Made and Printed in the USA
  • FSC® Certified—sourced from responsibly managed forests that protect both people and planet

About This Design

Funny 21st Birthday Card - Immature

Funny 21st Birthday Card - Immature

Do you know a young person who is turning 21, but whose mental maturity often seems younger than their age? This 21st birthday card is designed for a laugh, with the outside designed to look like a birthday card given to a young child. The inside of the card reads: “I know you were expecting a more mature birthday card. But let’s be honest, your mental maturity has not kept up with your age.” Designed in Australia.
The Acceptably Unacceptable Design Co.
Artwork designed by
Australia
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Customer Reviews

4.9 out of 5 stars rating17.3K Total Reviews
16269 total 5-star reviews714 total 4-star reviews118 total 3-star reviews59 total 2-star reviews110 total 1-star reviews
17,270 Reviews
Reviews for similar products
5 out of 5 stars rating
By Debra J.April 17, 2024 • Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Really pleased with the card quality. The perfect theme to personalize a birthday celebration. Birthday greeting combined with a Christmas wish for my nieces Christmas Birthday. Perfect! These colours really pop on this Matte finish. The cute funny monkey expressions add humour to a birthday card surprise.
5 out of 5 stars rating
By AnonymousOctober 1, 2025 • Verified Purchase
Folded Greeting Card, Size: Big, 8.5" x 11", Paper: Signature Matte, Envelopes: White
I absolutely love this!! Thank you so much for creating a very special birthday card for my mom for her very special day!
5 out of 5 stars rating
By Lisa B.August 21, 2023 • Verified Purchase
Folded Greeting Card, Size: Standard, 5" x 7", Paper: Signature Matte, Envelopes: White
Zazzle Reviewer Program
We ordered this for my mother in law’s 90th birthday. We used pictures from throughout the years. She loved the card and surely will bring tears and smiles whenever she looks at it. Printing was very clear

Tags

Folded Greeting Cards
funnymaturity21stjokechild likebirthday21st birthdayfunny birthday carddinosaursimmature
All Products
funnymaturity21stjokechild likebirthday21st birthdayfunny birthday carddinosaursimmature

Other Info

Product ID: 256893102148297054
Designed on 2021-12-20, 9:05 PM
Rating: G