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Flunch, derived from the similarly-named fast-food chain, "Flunch", is a noun which refers to the object of oral human expulsion (vomit), or a verb meaning to "to vomit".

The reason this word means "vomit" or "to vomit" is because the restaurant is absolutely revolting, serving up rotten mussels and frozen sweet products. After dining at the restaurant, if it can be justified as dining, we literally felt like vomiting, or flunching.
I feel like I'm gonna flunch.

Somebody flunched behind the door!

Ew, I just stepped in someone's flunch!

That ride is intense, last time I went on it I flunched.
by jevaisfluncher March 28, 2015
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A wierd french fast food resteraunt that is generally to be avoided.

Also a word that can be used in place of virtually any derogatory term/insult.
go flunch yourself

what the flunch

I caught flunch off bob

eat your flunch

you flunched my dober
by Rath Roiben Rye May 25, 2008
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a fucked lunch; a tasteless, ugly daymeal that makes you vomit or you feel a sickness, disgust, nausea etc.
What a flunch you gave me!!!!!!!!!!
by Andrius M. iamlonesome April 07, 2008
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aka fun lunch, a work lunch where drinking is not only accepted it is mandatory.
My TL drank a pitcher of Margaritas at our flunch.
by Skeezer Pleezers June 26, 2006
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Vertical chin beard worn by either sportmen, snowboarders or people who have no sense of style
Robert Pires has one.

Like a Brazillian bikini wax for your chin.
by Luke Dearden June 08, 2005
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