a person who always inserts a veiled, stinging remark into a general conversation.
PAM: "I was trying on the pants, and I asked her what she thought and she said, 'Those pants would look good on someone who didn't have cellulite'."

RENE: "Fucking Jellyfisher!"
by Ashley Wedding September 26, 2005
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A state of euphoria resembling a brainless underwater creature usually caused by drugs, music, alcohol, or some combination of all the above.
Sheldon was so jellyfish that he passed out while standing at the EDM festival
by MalaysianSensation October 1, 2015
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Jellyfishing is a term used to describe a feeling experienced in two circumstances:

1) Post-coital jizz lingering in your vaginal passage following unprotected sex.
2) Whilst experiencing the heavier side of your menstrual cycle.

In both instances, usually when moving from a horizontal or seated position to standing, the squeezy 'splodge'-like feeling of each substance exiting the mouth of the vagina feels like that of a jellyfish squirming its way out.

*Note*: neither can be felt whilst a tampon is in use as this stems the requisite out-flow prior to its exit.
1) Can I borrow a pad? Jack and I banged 4 times last night and I'm seriously Jellyfishing today!

2) FYI, this period is a heavier one and I'm Jellyfishing so much right now.
by DBBitches January 19, 2017
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A sport enjoyed by the inhabitants of Bikini Bottom. i.e Spongebob
Spongebob:Squidward won't come jellyfishing with us!
by Meathawk January 3, 2005
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A man that gets emotionally and mentally dominated by a girl. He is left empty and pathetic, like the common jellyfish.
"Hey, Jason's girl cheated on him and now he's acting like a complete retard saying he has nothing to live for, he's become a real jellyfish."
by Noah Vanderhoof June 6, 2006
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It's when after someone takes a shower, they stop the drain and leave a little water left in the tub. Then they ejaculate in the small pool and leave the "jellyfish" there for the next person/roommate to discover.
you live in an apartment, dorm, or house - where a bathroom is shared. the Jellyfish is at the next level of disgusting pranks!
by Trivial Pursuer December 21, 2010
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wet cum. When semen gets in water such as in a hot tub it becomes hard and looks like a jellyfish.
I jacked in the shower and left a jellyfish sitting in the drain.
by Libraryguy July 28, 2009
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