The action marks preceding a logo or cartoon character as it runs. It is the onomatopoeia of these action marks.

The UCSD improv comedy team is named for these marks. This is not an acronym.
The logo for the LA Clippers has action marks preceding the basketball. These are foosh marks.

"It's like the word itself is running. It's like, foooooosshhhh!"
by Mark Monaghan February 11, 2008
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A highly caffeinated mint that can keep you up all night studying for midterms and finals.
I'm gonna take me some Foosh before studying for chem.
by mmmfoosh May 26, 2007
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a word invented by mispronouncing the word 'fortune'. it is now widely known to replace the word 'fool', 'idiot', etc.
Girl: what day is it today?
Boy: the 11th. it's written on the board right in front of you, foosh.
by Fooshious Gal December 9, 2010
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It stands for Frequently Overdosed Old Shit Head. a.k.a. an old fogie who does way to many "fun things" than is good for 'em...It's also just a random insulting term to use on any old git.
"You bloody Foosh!"
"That is one helluva foosh over there"
by Ara April 3, 2004
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the act of blowing air into your nose with your mouth. having the equivalent of blowing a raspberry. used when you are mad at someone in a very immature way.
you suck ian...i hate you...::foosh::
by Malaria lol November 25, 2004
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The same exact as floosh(the one about the female), just in solid form.
EX: Man, her floosh was left here overnight and hardened into large chunks of foosh the size of my head!
by Flooshlover777 October 1, 2007
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