Sage Northcutt Thinks Mickey Gall's Smack Talk Is Funny

UFC rising star Sage Northcutt doesn't seem fazed by Mickey Gall's violent smack talk -- laughing off his bone-breaking threats as pure comedy ... while training with UFC champ Tyron Woodley.

As we previously reported, Gall threatened to "hurt [Sage] bad" when they face off at UFC on FOX 22 in December .. adding, "I'm gonna break his bones."

Since Tyron and Sage are friends, we hit up the champ to find out how Northcutt's preparing for the fight -- when Super Sage made a surprise appearance and reacted to Gall's comments personally.

Check out the clip ... it's clear Tyron thinks Mickey may have bitten off a little more than he can chew.