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.
by Bacita Mae Jenkins April 4, 2020

Verb-- The act if becomming so unbelievably drunk that your body takes on traits of a jellyfish. You have no brain, bones, eyes, or clue where you are or what you're doing.
Scott: "Holy shit what the hell happened last night? I don't remember leaving the bar!"
Amy Jo: "Yeah bud you were jellyfishing hardcore! We just sat across the bar and laughed at you."
Amy Jo: "Yeah bud you were jellyfishing hardcore! We just sat across the bar and laughed at you."
by sbaue September 27, 2013

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

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 15, 2021

Person 1: That girl didn't like me, and now she's making others dislike me as well.
Person 2: They're all jellyfish.
Person 2: They're all jellyfish.
by Monster-Punk-Barbie April 3, 2016

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
by FatXenomorph December 6, 2019

The act of going-with-the-flow. When a person is confronted with a decision or confrontation, and chooses to not act.
"Hey Tim, should we go out tonight or stay in?"
"I don't care."
"Quit jellyfishing and make a choice!"
"I don't care."
"Quit jellyfishing and make a choice!"
by Mykel-Miracle October 3, 2009
