Zac Efron And Seth Rogen Draw An Ungodly Amount Of Penises On Conan

To do this latest "Clueless Gamer," Conan O'Brien has got balls ... drawn on his face.

In honor of "Neighbors 2: Sorority Rising," Zac Efron and Seth Rogen joined Conan O'Brien for some "Mario Kart 8." And since this was all college-themed, the trio decided to put frat stakes on the game -- drawing penises on the person who lost. As you can imagine, Conan got a lot of penises drawn on him (like, an ungodly amount of penises). One penis even resembles a tear drop, which Rogen says makes it look like Conan "killed a dick in prison." So, yeah, these are some serious penises.

For the segment, it seems like Conan got the shaft, but really, everyone's a wiener.

"Conan" airs weeknights at 11:00 p.m. ET on TBS.