The Divergent star stopped by the Tonight Show With Jimmy Fallon last night and they played a game of "Pumpkin Time Bomb." Never heard of it? Yeah, we hadn't either.
Basically, you keep putting rubber bands around a pumpkin until it explodes, which we never even would have believed would actually happen until we saw it with our own eyes.
Since the segment had a limited amount of time, the duo had a major head start with a bunch of rubber bands (190 to be exact) already having been placed around the pumpkin, but either way, it's still cool to see.
Jimmy said that the game was "new," but he played it like an old pro, while Shailene displayed the same terrified reservations that we would have had.
Check out the clip above to see them play the surprisingly suspenseful game.