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Christmas Joy Proven By Penguin Math T-Shirt

4.7 out of 5 stars rating
32228 Total Reviews |
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Style
Basic Dark T-Shirt
-$1.95
+$13.55
Colour & Print Process
Black
Vivid Printing: White Underbase

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Style: Basic Dark T-Shirt

Comfortable, casual and loose fitting, our heavyweight dark colour t-shirt will quickly become one of your favorites. Made from 100% cotton, it's unisex and wears well on anyone and everyone. We’ve double-needle stitched the bottom and sleeve hems for extra durability. Select a design from our marketplace or customise it to make it uniquely yours!

Size & Fit

  • Model is 188 cm and is wearing a medium
  • Standard fit
  • Garment is unisex sizing
  • Fits true to size

Fabric & Care

  • 100% cotton (Heathers are a cotton/poly blend)
  • Double-needle hemmed sleeves and bottom
  • Imported
  • Machine wash cold

About This Design

Christmas Joy Proven By Penguin Math T-Shirt

Christmas Joy Proven By Penguin Math T-Shirt

Christmas Joy: Scientifically Proven! This unique and humorous design is the perfect equation for holiday cheer and clever humor. It presents The Unified Field Theory of Joy, humorously demonstrating that the festive outcome (\text{Christmas}) is derived from the core \text{Penguin} variable. The graphic is a detailed chalkboard illustration featuring a cute penguin in a Santa hat, surrounded by academic diagrams and the final Q.E.D. conclusion. It’s an ideal choice for STEM enthusiasts, physicists, math teachers, or anyone who believes that logic and an adorable penguin are the true keys to holiday happiness.
WhimsyWares12
Artwork designed by
taroudant, taroudant, Morocco
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Customer Reviews

4.7 out of 5 stars rating32.2K Total Reviews
25248 total 5-star reviews4958 total 4-star reviews1084 total 3-star reviews488 total 2-star reviews450 total 1-star reviews
32,228 Reviews
Reviews for similar products
5 out of 5 stars rating
By Robert C.1 March 2022 • Verified Purchase
Basic Dark T-Shirt, Black, Adult L
Creator Review
I purchased this to test to see if zazzle was producing good quality. Needless to say, they are. The sizing runs a bit on the small size though. Print quality is perfect. What you see on the screen is what you get.
5 out of 5 stars rating
By Xavier D.3 February 2021 • Verified Purchase
Basic Dark T-Shirt, Black, Adult M
Creator Review
I like the colours and design, I liked it that much I bought one for myself. Yes the colours and deisgn turned out great. Much better than I expected
5 out of 5 stars rating
By Rachel R.4 September 2025 • Verified Purchase
Basic Dark T-Shirt, Black, Adult S
Ordered the Irish terrier t shirt. I love it! There was a slight issue with sizing ( my fault) but their customer service was amazing. New t shirt within 5 days. I recommend getting 1 to 2 sizes bigger. I am wearing Men's size large.

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Other Info

Product ID: 256159961445240607
Added on 24/11/25, 5:36 am
Rating: G