A male individual who talks or texts your girlfriend in large amounts, usually with increasing levels of annoyance. Usually this person is not worthy of stealing your girlfriend, just annoying the piss out of you. The difference between a cock block and a girlfriend intruder is that most of the time this person is a friend of yours and doesn't have the intention of stealing your girlfriend either, just being excessively annoying.
"He's climbin in yo' windows, snatchin yo' people up so y'all need to hid yo' kids, hide yo' wife, and hide yo' husband cuz dey rapin everybody out here"
noun: a brief show (music or dance etc) performed between the sections of another performance noun: an intervening period or episode verb: perform an interlude