by mccrack February 20, 2010
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.
Sherwin: I think it was so fish that it was fishlay-o-fish.
by TigerTerp February 02, 2022
by happy chasm March 19, 2009
by My Names Jeff February 11, 2018
by Gina R April 14, 2006
by Bl0wMyHe4d June 25, 2006
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