Dried Masturbation
When someone or something masterbates with their clothes on. People usually do this in public, while nobody is paying attention to them.
Mike: That guy sitting at the back of the gym had some Dried Masturbation while he was sitting there looking at the girls big booty.
Jake: I know, right?
Mike: Yeah, haha.
Jake: I know, right?
Mike: Yeah, haha.