Gay (not the happy or joyfull kind). Go fast can be used in a wide variety of situations where guy's act girlie or for objects that are un-manly these objects and guy's are Go fast. Homosexual man are also Go fast. It is best explaind using the examples.
1) Guy in bar: I'll have a Baileys
Bartender: Dude dont be Go fast
2) Guy: Motorcycles are dangerous
Manly guy: Dude dont be Go fast
3) Hot chick: Kiss me, guy
Guy: I think we should take iut slow
Random bystander: Dude dont be Go fast