Short for official. Usually is misunderstood as "a fish" and causes confusion.
human 1: "HeyI heard you were moving."

human 2: "Yeah it's o-fish"
by mccrack February 20, 2010
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This is a combination of the terms "fish" - meaning fishy, sus - and "shlay" - which is a variant of slay. This contradiction of good and bad causes this expression to convey "something that is so bad that is good."
Raymart: Did you guys hear Enzo's pick-up line? It was big fish.

Sherwin: I think it was so fish that it was fishlay-o-fish.
by TigerTerp February 2, 2022
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it's the Catholic Big Mac.
"we're having Filet-O-Fish night on Friday, cause we can't eat meat." - Mom

"YAY!" - kids
by happy chasm March 19, 2009
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When a girl doesnt wash her vagina for a while and then twerks on a guys face naked
Damn that fillet o fish was great last night
by My Names Jeff February 11, 2018
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A mmmmmm... good piece of smelly pussy. Lick It UP
Oh man I ate Maggie's fillet-o-fish last night... damn she was like tuna fish.
by Bl0wMyHe4d June 25, 2006
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1: A stoner sandwitch containing a fish like square patty that can be bought for a buck for Mc Donalds.
by TalonIX April 26, 2006
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