Sweatshirts on Etsy read “Go Taylor’s Boyfriend,” “Swiftie Bowl,” “In My Chiefs Era” and “Karma is the Guy on the Chiefs” — a reference to the pop queen’s ‘hit song “Karma.”‘hit song “Karma.”Initially, Atlanta-based Etsy vendor Hayley Williams was skeptical that her Swift-inspired Super Bowl apparel would sell, but she “was very wrong, she admitted in an interview with The Guardian on Saturday. In just two weeks, she’s sold 18 sweatshirts reading “Go Taylor’s Boyfriend” for $35 a pop.