Warren G Colors Himself Badd

1/16/2010 2:02 AM PST BY TMZ STAFF
Someone better regulate Warren G from doing karaoke -- because the attempted to sing "I Wanna Sex You Up" in the back room of a Vegas strip club (yes, you read that correct) ... and failed.

Warren G: Click to watch

It all went down at The Players Ball during AVN weekend at Sapphire Gentleman's Club.

Tick tock ... you should stop.