Watch This: Conan O’Brien Hits the Vape and Plays Mario Kart With Seth Rogen and Zac Efron

To promote the upcoming release of Neighbors 2 on May 20th, patron saint of cannabis Seth Rogen teamed up with his costar Zac Efron to challenge Conan O'Brien to a rousing game of Mario Kart 8 with some frat boy stakes. Armed with a keg of green tea kombucha (because Conan is "wheat-free" right now) and a vape pen, Conan channels his inner frat boy and suffers the phallic consequences every time he loses.