Mark Wahlberg and Jimmy Fallon got a little slap happy on Wednesday’s Tonight Show —literally! The Gambler star joined the late-night host for a game of “Slapjack,” a high-stakes game of blackjack where the loser of each round gets smacked in the face by his opponent with a giant rubber hand. Mark dealt first, and it was quickly apparent that the 43-year-old father of four knew the game well. Jimmy wasn’t sure whether or not to call the actor’s bluff. Obviously, Mark didn’t hit hard. In fact, the late-night host kept right on grinning through the slap. The Gambler hits theaters Dec. 25.