A gay man walks into a pub and asks the barman, "Can I have a pint, please, Spanner Face?"
Barman looks bemused but serves him.
Man comes back, "Can I have another pint please, Spanner Face?" Barman frowns but serves him.
Man comes back for third time, "Can I have another pint please, Spanner face?" Barman says, "only if you tell me why you keep calling me Spanner Face".
Man replies, "Everytime I look at you, my nuts tighten".