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 18, 2009

by My Names Jeff February 10, 2018

by Gina R April 28, 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 July 28, 2008
