This is the first episode to parody major brands, such as Facebook (Friendface) and Coca-Cola/Coke (Cuke).
Roy's first T-shirt (which says "We can live. We can both live") is from the cult sci-fi movie Robot Jox (1989). The second is from the comic series 'Savage'; the main character, Bill Savage, says 'Laugh it off, Twinkletoes' before he shoots someone.
'Friendface' is an obvious spoof of Facebook.