Mario and Luigi: warrior plumbers tee

Matt sez, "The guy behind one of my favorite web comics, Dr McNinja, did this awesome tshirt design wherein Mario's world is de-cartooned and amped up. Yoshi is a scary dinosaur with a monstrous tongue, goombas look like acid visions of mushrooms and the piranha plants have shark-like teeth."

Warrior Plumbers T-Shirt

(Thanks, Matt!)