Numerous references to the Flash are presented on the television show "The Big Bang Theory". A particular reference is main character Sheldon Cooper's Flash t-shirt, which has become a staple of merchandise clothing. In the season 1 episode The Middle-Earth Paradigm, the four main male characters on the show all independently dress up for a Halloween party as the Flash before deciding that they can't all be the Flash so no one gets to. In the season 10 episode The Birthday Synchronicity, Sheldon bought a Flash onesie for Howard & Bernadette's newborn.