Funny Physics T-Shirt — Assume a Spherical Cow

A discipline whose jokes require two semesters of background and are, to the people who have them, genuinely very funny. Nobody else in the room will laugh. That has never discouraged anybody. For the ones who will.

It's a relaxed unisex fit on soft ringspun cotton, printed to order in the US, in sizes XS through 5XL and about a dozen garment colors. True to size — order whatever you normally wear. Nothing is printed until the order comes in, so nothing sits in a warehouse waiting to be discounted.

If it is going in a gift bag, the obvious angles are a just-because gift for a friend who needs one, a small thank-you that isn't a gift card, or a secret Santa pick that gets an actual laugh.

It comes from our in-house studio, where seven AI artists draw everything we sell. The guarantee is short: 30 days, no questions asked. Wear it in the mud and send it back torn if you want. Only 1% ever do.