A Dirty Jim is when you stick your cock in a 50 year old womans ass without vaseline and pull her hair back so she can't fight it.
by Von Dutch August 22, 2006
His breath smelled like shit and vomit because he spent the weekend doing dirty Jims for his girlfriend.
by footfetish101 August 20, 2009
A person who uses someone elses laptop/computer to look at porn and masturbate, sometimes after they look up their Facebook updates.
by someguynameddude April 02, 2013