is the fourth guy meant to be Jason Segel?

Michael Cera looks like he's giving it to Jonah Hill.

Who's the fourth guy?

I've seen 1/6 of them naked. HAHAHAPENIS

Bill Hader needs to get out of the way. He's blocking my full-frontal view of His Ruddness.

Bill Hader looks a little Chester the Molester-ish here, rubbing down Set like that.

Wow, if the bike handles weren't there it would be a whole different kind of picture.

The only person here who has earned the right to be naked on a bicycle is Paul Rudd. The rest of these people are just gross.