[4] Cam Gigandet (Easy A, Twilight) stars as a playboy whose penis detaches and manifests as its own person (Nick Thune). I’m all for absurd concepts and sex comedies, but Bad Johnson plays it too safe and formulaic to leave much of an impression. Once Gigandet’s character and his penis squabble and call it splits, the film falls into standard rom-com territory with Gigandet trying …