[patton]

ESAD?
PLONK?

[Sarajevo]

ESAD?

Ingest feces and pass away

PLONK?

You got me there! JRandomFreeper?

[Hugin]

plonk definition
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”.