movie jacker

You know the type, the balding, squirrely-looking guy with glasses and a trenchcoat who turns up to an 11:30pm showing of an animated kids' film. His mission there is to jack it during the entirety of the presenation, with the majority of satisfaction derived from the paradoxial concept of a grown man getting off while watching a kids' film. Surprisingly, although it is very easy to identify a movie jacker, movie theatre staff are unable to prevent him from successfully buying a ticket, leaving fellow cinema-goers unsettled and disturbed.