A video of Julia Roberts has gone viral, but you’ll never guess what for.

She and Jimmy Fallon played a game of “Face Balls” together when Julia guest starred on The Tonight Show Thursday.

The two took turns throwing inflatable balls at each other’s faces and then watching it all play back in HD slow motion.

“I’m kind of scared,” Julia quipped before being knocked with the first ball. “You people are twisted.

Watch the hilarious antics below.