[USENET: possibly influenced by British slang `plonk' for cheap booze] The sound a {newbie} makes as he falls to the bottom of a {kill file} Used almost exclusively in the {newsgroup} talk bizarre, this term (usually written "*plonk*") is a form of public ridicule
If you plonk yourself somewhere, you sit down carelessly without paying attention to the people around you. Steve plonked himself down on a seat and stayed motionless as the bus moved away
set (something or oneself) down with or as if with a noise; "He planked the money on the table"; "He planked himself into the sofa"