[There was a video here]

Usher brings a fan onstage to serenade her. Sexily, he takes her into his arms. Reclining, she grinds against him, then lifts her leg and flicks her foot over his head, stripper-style—only to kick him in the face.

The woman, who attended Usher's Madison Square Garden concert on Monday, can be seen apologizing frantically in the above video. After a moment of stunned silence, Usher recovers: "We play rough in bed," he murmurs throatily. "Kick each other in the face." The crowd laughs, and the silky serenade slow-beats on. [Celebitchy, Celebuzz, YouTube]