For lovers of wordplay and bathroom humor, our "Diarrhea Is Hereditary, It Runs in the Jeans" design brings a hilarious twist on an old joke. The pun plays off the double meaning of "runs in the jeans"—mixing the idea of traits passed down through family ("runs in the genes") with a funny, less glamorous take on diarrhea. Perfect for anyone who loves a good, slightly crude joke, this shirt is sure to get laughs from those who appreciate the finer points of bathroom humor. 💩 Printed on our super soft ring-spun & combed cotton unisex T-Shirt. Or upgrade to our Luxury vintage heather edition (cotton/poly blend) for an even softer, more durable, classic look. We print & ship all of our high quality graphic tees in the USA.