Watch ‘Buff’ Jimmy Fallon Nip Sync With Terry Crews

Shut the front door! Has Jimmy Fallon been hittin’ the gym or what?

The comedian shed his shirt for a “nip sync” contest with “The Expendables 3″ star Terry Crews, and at least a minute, it seemed like the 39-year-old “Tonight Show” host had revealed a previously unseen ripped physique. Alas, the wonders of CGI. Watch the two funny men ham it up on Celebuzz…