The guys cross the pond and double-cross each other in this hour-long London special. They stick out like sore thumbs, and their hilarious excursion culminates with an unforgettable punishment in front of thousands of cheering fans.

The guys bark up the wrong tree as employees at a pet store, then head to the market for a game that throws everything up in the air. And the big loser virtually loses his mind after entering a world he's never visited before.