You catch a fresh fish, (with salt water and everything) still on it and immediately smother it with nacho cheese, thus, filling up the gills with nacho cheese. This taste is supposed to resemble the taste of a dirty asshole.
Nick: Hey Mark, so i was licking my girlfriends butthole, and it tasted like Fishy Butthole!
Mark: Dude........nasty.
Mark: Dude........nasty.
by KidsPoopInMYLunchBox January 7, 2010

by Skybtslover April 13, 2019

by CarcassCardigan March 24, 2014

Used to define someone of child-like appearance and behaviour. Derives from the food ' fish fingers' made into other shapes that our mums and dads fed us when we was kids.
by BESTBOWDEN April 21, 2009

It’s when someones own private Pookie smells rank and fishy (pookie in this context meaning coochie)
by Troy boy troy November 6, 2022

by tommy fishy October 27, 2008
