Sometimes you have to know when to call it quits.
[Image via WENN.]
There were a lot of brand new acts showing their stuff at the Billboard Music Awards this year!
But Jennifer Lopez decided it was time to show these kids how it's done!
Ch-ch-check out the video (above) to see Jenny from the Block rock the BMAs, with a little help from Pitbull!
We guess Pitbull is a firehouse dog because J-Lo is really working that pole!