Over the course of her ongoing summer tour, Taylor Swift's brought out everyone from The Weeknd to The US Women's soccer team to "Orange Is The New Black"'s Crazy Eyes, but the latest person to join her onstage might be the most unexpected. Especially because she chose to bring him out in Seattle, of all places, Fetty Wap surprised us by coming to do "Trap Queen" (with Taylor, not solo).
Above, you can watch some fan-shot clips of the performance at Century Link field. Then you can start speculating how this connection happened, and if Swift does in fact know that the "pies" referenced in the lyrics aren't of the lemon merengue or Boston cream varieties.