Selena Gomez did not have a ball at the Jingle Ball Friday night in Los Angeles.
The 21-year old ex-girlfriend of Justin Bieber battled technical difficulties throughout her set, at one point telling the crowd:
"Sorry, the sound isn't working! Are you guys having a good night? I promise, a lot cooler people are gonna come out tonight. Is it okay if I perform two more songs and you guys can get to it?"
But Selena then tried a rendition of "Come & Get It," only to grow so agitated by the conclusion that she dropped the F Bomb and stormed off stage.
Watch the performance and then watch her curse in frustration below:
One thing Gomez did NOT do, however? Twerk on Santa Claus.
She left that to Miley Cyrus.