Hey, you. Big fan of Bradley Cooper? Well, this video will either put you off or seal the deal forever. Watch as Tonight Show host Jimmy Fallon convinces him to play air guitar to Neil Young's "Down by the River." It goes on forever, and Cooper remains (almost) straight-faced for the duration.

Fair warning, though: May induce flashbacks to excruciating hours passed in basements with music-obsessed high school dudes.