piss kidney

derogatory term that is factual, and is therefore not a derogatory term. As a result, it makes the user seem useless.
Bob: Don't be such a wanker.
Ben (in response): Don't be such a piss kidney.
Bob: What? What kind of insult is that. You idiot.

(The phrase originates from the television show Peep Show, series four).
by Sir Rory of Prestonia November 04, 2007
mugGet the piss kidney mug.

piss-kidney

Derogatory insult, used in Peep Show by Mark when he couldn't think of anything more appropriately enraging to call a driver when trying to get run over to avoid his wedding to Sophie.
"You're a piss-kidney."
mugGet the piss-kidney mug.