iHeartRadio‘s Jingle Ball crew learned an important lesson the hard way: don’t tease Swifties about their idol!

On Tuesday night, the Jingle Ball Tour landed in Detroit for its much awaited performances by Usher, Jelly Roll, Big Time Rush, Flo Rida, and more — but their “surprise” performer stole the show, and angered a lot of concertgoers! A host from the Michigan city’s local radio show Mojo in the Morning spoke to the crowd in the middle of the show, hinting at a surprise guest:

“Earlier this year, she came to our city and tore it down. She’s arguably having the best year of anyone ever. Has anybody familiar with a song called Cruel Summer? Does anybody know a song called Karma? In her Jingle Ball era…make some noise for…Trailer Swift.”

In the midst of all the excitement, no one really caught on to the Trailer VS Taylor name until it was too late. The impersonator had already walked out into the venue as Tay Tay’s hit Fearless began playing — and it was so easy to hear the music because the audience went into silence! OMG!

Ch-ch-check out a couple TikTok clips of the night (below):

not Channel 95.5 in Detroit bringing out a fake Taylor Swift at Jingle Ball …. #trailerswift #wtf #jingleball #channel955 #taylor #taylorswift #nottaylor

♬ original sound – It’s Daavaaad, Bitch!