Fish Cating 

The opposite of a cat fish. When a person looks ugly on social media but good in real life.

Dude 1 (looks at friends phone): Yo that chiick is ugly.
Dude 2: Nah bro you should see her in person. She Is just fish cating.

Fish Cating by Dude_brooooo June 4, 2018

Fishcaking

The process of administering a haddock into the vaginal shaft for means of sexual pleasure.

Jane went down the fish mongers purchased a haddock in the knowledge she be fishcaking with her boyfriend Paddy later.

Fishcaking by The Fish Monger January 30, 2010