Taylor Swift dropped her, but fans are already clamoring for another re-recording thanks to a particularly epic performance of one of her most popular revenge tracks. Swift hit the stage for a trio of shows in Seattle, Washington, over the weekend and delivered «This Is Why We Can't Have Nice Things» as one of her surprise songs on Saturday. The scathing anthem was featured on her 2017 album and is rumored to be about her feud with Kanye West.After singing the line "'Cause forgiveness is a nice thing to do," Swift let loose a wildly loud cackle, taking a moment to compose herself before adding, «I can't even say it with a straight face.» While the laugh and line are both included in her original recording of the song, the genuine nature of Swift's real-life laugh had fans in the audience at Lumen Field and on social media going wild. «SO FUN SO FUN SO FUN!!!!» reads the caption on an original TikTok video from the evening. «Her cackle is EVERYthing,» wrote one commenter.