22
A bodily fluid found in a woman's underpants with a consistency very much like a jellyfish.
"Girl, I think i just started my period..i better go check it out"..girl returns.."False alarm, it was just a jellyfish faking me out."
by Pirate Niki July 10, 2008
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23
Jellyfish are jellylike
by Brain Villela January 19, 2005
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24
a successfully used condom filled with ejaculate
that was fun baby, let me throw away this jellyfish
by chasingorion February 02, 2010
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25
An ad or notice printed with phone numbers written vertically at the bottom on tearable tags and tacked up on noticeboards, shop windows, etc.

Named for the phone number strips' resemblance to a jellyfish's tentacles, and because the pages appear to be floating on the wall/noticeboard/window like jellyfish in the ocean.

Also known as space invaders, especially when there get to be too many of these notices in one place.
I got the number for a great share house off this jellyfish on a post at uni.
by GWMcL December 12, 2010
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26
A free-swimming, gelatinous, often bell-shaped creature with a basic nervous system and the ability to sting prey. (Sometimes confused with or sometimes seen as moon jelly.)

A weakling or someone who lacks strong character.

Apparently, several interesting euphemisms, all of which can be found right here.
"You're such a jellyfish," said my sister after I dropped my books for the third time and protested that they were heavy.
by tomato-greens December 07, 2005
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27
A Jellyfish is what you make when you wack off into a glass of water. The result is a partially floating, dangling, jizz strand that looks like a jellyfish.
"So did you hook up with whats-her-name last night?"

"No dude, I just went home and made a jellyfish."
by El Spicy Taco August 21, 2008
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28
A type of high five in which the two participants high five, snap, and pull back their hands in a jellyfish-like motion.
Person 1: Hey man, wassup?!

Person 2: Not much, bro! Jellyfish!
*Jellyfish*
by HarveyLadder October 18, 2010
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