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To project vomit mainly in an upwards direction
Hey steve did you see that guy Chunder everywhere last night?
by Guillotine September 17, 2003
also known as the gooch or the grundel
wanna lick my chunder?
by jackery February 23, 2005
Aslo used in reference to a fat person.
Look at that chunder guts.

My god, he's a fucking right chunder.
by stuntedmonk April 11, 2007
Chunder is a variation on fermunda cheese. Pretty much anything that is seriously nasty.
"Chunder from down under."

"Dude, did you see Justin eat that huge Chunder Burger?"
by Flavius731 June 02, 2006
When you throw up a little in your mouth and then swallow it.
I ate so much I chundered!
by bricka April 11, 2006
The Diarrhea smelling nastiness that is a container of food left in the fridge that is there for 2 months, that becomes so nasty, and fetid that you almost projectile vomit all over your self and your surroundings when you lift the lid and break the seal of the mold laden nastiness contained within.
Damn dude that chunder in the fridge made me puke up that pizza I just ate.
by Guy June 16, 2006
a chessy build up on your taint
damn that bitch has alot of chunder
by Melissa Rowe October 30, 2006