fish slap 

To hit someone with a fish, usually to the face. In real life(IRL), this is considered fairly extreme in most groups and not terribly common. In internet chat, especially IRC, it's a very common way to show mild disapproval/discust/boredom. It was included as a (the only?) default point-and-click action in mIRC (a popular Windows IRC client) further increasing it's popularity. The default action (changeable, randomizable, etc) when fish slap is selected is currently "X slaps Y around a bit with a large trout".

When discussing the practice, many people tend to bring up Monty Python's Fish Slapping Dance, a popular sketch from Monty Pythons's Flying Circus. Though certainly not the only fish slap in the media, it's most likely one of the most famous.

Calm down or I'll fish slap you!

fish slap by Patrik Lundin October 5, 2004

fish slap 

To beat relentlessly with a fish, usually with a large trout or tuna

That dude was pissing me off, so I FISHSLAPPED him with a tuna.

fish slap by weirdo June 27, 2003

fish slap 

when someone needs to calm the front door down....and they wont stop so you have to slap them with a fish..perferably in the face.

Lys was being overdramatic so we had to fish slap her.

fish slap by boots wit furr February 16, 2008

Fish slap 

Fish slap is when u shove ur whole cock down ur girls Throught and and pull it out and slap her with it

Yo Dan I fish slapped ur mom last night

Fish slap by Fishy Kids January 24, 2021

fish slap bet 

A variation of a slap bet wherein the loser has to buy a fish for the winner so the winner can slap the loser with it.

Peter: I fish slap bet you thriller will play on halloween night.
-------------------------------
(day after)

Adrian: buy me a wish!
Peter: OH.....crap!

fish slap bet by andrepa November 12, 2009

Russian Fish Slap 

When one wets their non-errect penis and wiggles and smacks it in their partners face.
Resembling a fish out of water.

Steve: Yo, last night I was doin some real freaky shit wth my bitch.
Ron: what you do?
Steve: I did the Russian Fish Slap.
Ron: Thats pretty intense man.

Russian Fish Slap by jbird1 July 30, 2011

slimy fish slap

when you finish having sex and you take the condom off, run upstairs and slap your brother in the face with it while he's sleeping.

Brother: last night.. i think something hit me in the face while i was sleeping, but i dont know i didn't wake up.
You: did it feel like a slimy fish slap?
Brother: Yeah, i think so!

slimy fish slap by pabloo richardson February 1, 2009