11/26/2014 02:38 pm ET Updated Dec 06, 2017

Taylor Swift Called Out Justin Long For Humming 'Shake It Off'

Some serious star power descended on the court when Taylor Swift, Kate Upton, Amanda Seyfried and Justin Long gathered for a recent Knicks game. But for Long, this daydream became a bit of a nightmare.

"At one point they were playing that song 'Shake It Off' -- that song, you all know it," the "Comet" star recounted. "It's one of those songs that really gets in your head, really crawls in there."

Long then began humming the tune, forgetting that Swift, who sings the song, was seated right next to him.

"And of course she heard it," he continued. "And she was like, 'Oh,' and sort of started laughing, and I was so embarrassed."

But Long insists that it wasn't just a ploy to impress New York's newest Global Welcome Ambassador.

"I didn't do it so she would hear me. I wouldn't have done it had I been all that conscious of all that," he said. "But she was really sweet about it. She was, like, 'That's the whole point of the album!'"

Well, that would explain this picture of Swift covering her ears:

taylor swift justin long

Long additionally described Swift as knowing "all about the Knicks" and being "really, like, shockingly down to earth."

Watch more from Justin Long's conversation with HuffPost Live here.

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Celebrities at NY Knicks' Basketball Games