Big Bang Theory - Knock Formula T-Shirt

SKU: 63561 Regular price $7.94 In-stock. Ships within 24 hours!

Sheldon poses against the Fibonacci spiral in a Lantern-inspired graphic on the front of this green, 100% cotton t-shirt from the Big Bang Theory, with his tradmark door knock mathematicized on top. You may not know the math, but you'll know the knock for sure.

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