When a person runs their fingers all over your body to simulate a jellyfish's tentacles.
Stop jellyfishing all over me! It's creeping me out!
by spiffs April 22, 2010

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when a person is sagging and their crack is visible aka plumbers crack and a friend who simply cannot resist temptation sticks their finger in the crack and wiggles it around. originates from Sponge Bob
Jerry: Fine this is what jelly fishing is...

Amanda: Did you just stick ur finger in my crack??...

Patrick: Thats what she said! OH WASSUP!
by Jellyfishers unanimous. November 14, 2009

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when a woman realises she has crapped her pants (underwear) she then begins to do what is known as "jellyfishing" this is where she crosses her legs in a tight bow, lowers the stereotypical 1960s long skirt she is wearing and scoops the mess into her handbag, she then flings the handbag into the nearest ocean and jellyfish (confused and aroused) swarm the handbag and are momenteraly dissapointed.
Gregory : GOOD GOD!
Stanley : What is it man?
Gregory : That woman just shat in her purse!
Wilma : its a classic case of jellyfishing that is.
x
by The Columbus Project July 22, 2009

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When you spank out a batch into a pool. The floating jizz looks like jellyfish.
I'd hate to be the guy who cleans out the pool filter after the frat goes jellyfishing.
by Super_Nick_ July 11, 2016

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The Urban Dictionary T-Shirt

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The Urban Dictionary T-Shirt

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