Someone who has no spine, no balls. A person who never stands up for themselves or anyone else. Someone who would never admit to any wrong doing.
I cannot believe that guy, he's such a jellyfish.
by Bacita Mae Jenkins April 4, 2020
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An in-experienced form of foreplay. Handjob gone horribly wrong.
The Jellyfish: when a female gently plucks the head of an erect penis using her forefingers and thumb in an upwards motion. This resembles a jellyfish swimming. It is also an extremely unsatisfying act.
by Aksoe December 14, 2012
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A weak and scared man with no heart or a brain who acts like a tough guy. However, they are clearly see through and you can see through their bullshit and weak ass act they're putting on.
Hey Henry, stop acting like you're a wise guy. You're a jellyfish, I could see straight through your lying ass.
by Lorenzo The Great July 16, 2021
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When someone takes on another's feelings for a third person, especially dislike.
Person 1: That girl didn't like me, and now she's making others dislike me as well.
Person 2: They're all jellyfish.
by Monster-Punk-Barbie December 25, 2015
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When a man ejaculates into his hand, then spreads his semen on his shlong, he then dips it in a glass of salt water, and proceeds to urinate in the glass, and a woman drinks the contents of the glass, leaving her with a sting in her throat
Man, this girl as a freak! She asked me to make her The jellyfish
by FatXenomorph December 7, 2019
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A free-swimming aquatic creature. It starts life as a larva, which attatches itself to a rock or other solid substance and develops into a polyp; eventually the polyp grows into the familiar bell-shaped organism.

Most jellyfish have tentacles and a basic nervous system, though they lack more complicated organs, and they are allegedly composed of about 95% water. They usually catch their prey by brushing potential victims with their poison-spouting, long tentacles, which can be anywhere from inches to several feet long.

Pl. jellyfish

Slang: various sex acts.
Sometimes, during low tide, one sees jellyfish lining the shores.
by tomato-greens January 14, 2006
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An adjective used to describe anything at all. Seriously, anything. It adapts to any situation, leaving people curious as to the meaning. It is meaningless, which makes it oh so meaningful.

(It's also a gnarls barkley sea creature that stings you and whatnot)
Man, that slut is lookin totally jellyfish! Hell yeah!

I don't know, I felt like the yams were a little too jellyfish this year.


by eed258 January 9, 2009
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