werewolf actor chatted with Jimmy about his movie and their mutual love of fantasy football, the two slapped on some cowboy hats and chaps and had a mechanical bull ride'n show down!
What does bull riding have to do with anything?? ABSOLUTELY NOTHING!
Fallon explained "There's no reason for it, we just thought it'd be a fun thing to try!"
HA! That's reason enough for us!
Watch (above) and see which rider comes out on top!