“Detroiters” star Sam Richardson says the most difficult thing he’s done on the Comedy Central series was also the most fun — he rode around downtown Detroit on a motorcycle with co-star Tim Robinson clinging to his waist. “It would get so hot because we were in these motorcycle suits. The heavy jacket and helmet,” Richardson told TheWrap. The actor remembers thinking: “Please don’t pee on me. ‘Cause like it’ll start out warm but then it’ll get cold” — he snaps — “like that.”