You can't help but laugh when you watch these hilarious bloopers from Justin Timberlake's appearance on The Tonight Show on Sunday. Hours after his buzzy halftime performance, JT joined Jimmy Fallon for The Tonight Show's special Super Bowl episode. The pair teamed up for a hilarious "Songversation" segment, which involved them breaking into song as they attempted to chat. In the final clip, which you can watch ahead, both Justin and Jimmy manage to keep a straight face — but behind the scenes, they couldn't quite keep it together. Check out the funny blooper reel above, then see how the internet reacted to Justin's halftime performance.