What goes on in Vegas most certainly will NOT stay in Vegas here!
Watch it go down (below)!!!
Whoa mama! If we knew Jimmy Fallon looked like that under the suit, we'd demand he do a different kind of late night programming! LOLz!
The Tonight Show host joined Expendables star Terry Crews for a pec-popping performance which can only be described as "Nip Syncing."
Ch-ch-check out the video (above) to see Jimmy and Terry get oiled up, shirtless, and in perfect harmony!