Jennifer Lopez’s fall at last month’s American Music Awards left her with an injured derriere.

“I have a bruised bone. What happened was one of the dancers’ backs was slippery from sweat and lights and everything. We never bargained for that because they always had T-shirts on in rehearsal,” Lopez explained. “So they were bare-backed, didn’t have shirts on for the performance, and when I stepped on their backs my feet got wet. So when I landed, it just slipped from under me.”

The “Louboutins” singer credits adrenaline with helping back onto her feet so quickly.

“That’s kind of what I felt the rest of the performance, ‘Did I fall?’ It happened so fast. I was up and all I could think was, ‘I have to get to the next beat. I have to do this dance solo right now.’ I had no time to think about it,” she told Ellen DeGeneres. “Then I get to the back, and one of the dancers was like, ‘Are you OK?’ ‘Oh my God that’s right, I fell.’ It was awful, but you know, it happened.”