1 definition by IPreferCatz;)

A person who repetitively stalks/ convulsively checks someone's Tweets, Wall, Posts, or blog entries without posting or without the knowledge of the person. Someone who regularly checks someone's social interactions from the safety of their dimly lit room.
Noah: Dude! Check out this girls Facebook Album
Brady: Daaayumm
Taylor: I'm defiently lurking her tonight.
by IPreferCatz;) June 2, 2010
Get the lurk mug.