< networking , abuse > (Possibly influenced by British slang "plonk" for cheap booze, or "plonker" for someone behaving stupidly; usually written "*plonk*") The sound a newbie makes as he falls to the bottom of a kill file . While this term originated in the Usenet newsgroup news:talk.bizarre , by 1994 it was widespread on Usenet and mailing lists as a form of public ridicule.
Another theory is that it is an acronym for "Person with Little Or No Knowledge".
(2002-01-18)