100. "Look What You Made Me Do" (2017)
The reason fans once cared about rap beefs: they inspired great songs, whether it was Queens vs. the Bronx ("The Bridge" vs. "The Bridge Is Over" vs. "Have a Nice Day") or LL Cool J vs. Kool Moe Dee ("How Ya Like Me Now" vs. "Jack the Ripper" vs. "Let's Go" vs. "To Da Break of Dawn"). But this just sounds like a trivial time-waster by her standards – Swift's celebrity feuds are not really one of the hundred most interesting things about her. The main attraction is the retro Panic! at the Disco vibe. "Look What You Made Me Do" turned out to be the lamest track on Reputation, but an impressively perverse head fake – a lead single that ended up having nothing to do with the album, musically or conceptually, making sure her new relationship songs would come as a surprise. To find a comparable stunt, you might have to go back to 1982, when Michael Jackson fooled the world into thinking Thriller was going to be a whole album of "The Girl Is Mine."
Best line: "It's much better to face these kinds of things with a sense of poise and rationality." Oh wait – that actually is Panic! at the Disco.