A person usually described as a short, fat, unattractive, brown haired, perverted boy who enjoys slapping girls in the ass, touching them in the ass, towel whipping girls asses, and simply staring at girl's asses for long periods of time.
Jim:Danny! Holy shit, you just slapped her ass! are you becoming a Mark?
by Angelo of earth March 08, 2008
a fag who doesnt like women and isnt tuned to the outside world. these people are usually huge ass nerds that licks their teachers balls, wut am i sayin, usually? they always do.
"mmmmm the teachers balls tasted so good last nite" "mark stop being a goddamn mark"
by unanymous#11132423345 June 12, 2005