look up any word, like blumpkin:
It means poop.
The reason it's called that is because it's the sound that poop makes when it lands in the water.
(Definition from maze runner)
"You look like a pile of klunk!"
by Cold Mafia August 01, 2014
when something/someone is sub par or doesnt meet expectations or breaks down. Also can be used to describe a feeling or state of mind.
"hey dude, your car is pretty klunks"
"hey im not feeling too well today....i feel klunks"
by meepmeep111 December 07, 2011
The sound made by a metaphorical lead balloon as it lands on the ground symbolising the way in which an unfunny joke has gone down.
Knock Knock
Who's There
Doctor Who
Klunk !
by Bunter October 13, 2004