Question: what does it mean for a man to have a clothespin on him?
Answer: In case you missed the passing reference in Episode 4, Sadie (Sarah Gadon) tells Jake (James Franco) that Johnny keeps a clothespin clipped to his penis to this day. ( In the 1940s and '50s, it was apparently fairly commonplace for mothers to put clothespins on their sons' penises in order to discourage masturbation.