'Jersey Shore' Stars Teach 'Youth In Revolt' Star Michael Cera How To Fist Pump

Yesterday, you got to watch as Michael Cera had his hair styled by "Jersey Shore" star Pauly D. Today brings lesson two: fist pumps. Cera, now properly styled and decked out in a new Ed Hardy tee, gets a lesson in how to beat the air with his fist from people who know a thing or two about such things. It's a pretty hilarious scene.

Cera's hang time with the "Jersey Shore" crew is part of a promotion he's doing for "Youth in Revolt," which hits theaters this Friday. You'll be able to see more from Cera and his new pals in commercial breaks during Thursday's night's airing of the latest "Jersey Shore" episode on MTV.