If you're looking for a burger-themed T-shirt to add to your wardrobe, head to TheYetee for the Ulti-Meatum T-shirt ($11) and tell the world, "I survived the Ulti-Meatum with only mild heart palpitations"! The Ulti-Meatum comes from Regular Show episode "The Best Burger in the World" and consists of a cheeseburger-stuffed cheeseburger sandwiched between two deep fried cheeseburgers-for-buns, topped with Himalayan ketchup.
TheYetee only sells each T-shirt design for 72 hours. The Ulti-Meatum shirt is available until 1 a.m. EST tonight, so if you want it, get it now.
[Thanks to Ewan Macdonald for the heads up!]