Reverse Shark 

A man swims on his back naked with a hardon, masturbating, in any body of water.

Did you see that guy reverse sharking?

Reverse Shark by sir christian jonathan mermaid September 19, 2012

reverse shark attack 

when you stick a knife handle up your friends ass while they lay on their belly, so the blade sticks out like a shark fin. this makes them crawl across the bed squirming back and forth whipping their feet side to side like a shark

i walked into to andy’s room and noticed that they had just been reverse shark attacked as they whipped across the bedroom

reverse shark attack by thedirtybirdwordturd January 21, 2025

Reverse sharking 

The female equivilent of Sharking

Did you SEE her sharking him just now?

Reverse sharking by JK August 3, 2004