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1 definition by Captain J. Sizzle

 
1.
When a man and woman have sex in a pool and the man pulls out at the last second and shoots his "jellyfish" into the water. This can and should be enhanced by being performed at night in a pool with lights making the jellyfish glow. This move can also be performed with gay males, or even a solo male.
1. I came by your house last night to use your pool. I ended up giving your sister a jellyfish.

2. I jellyfished your sister.
by Captain J. Sizzle April 26, 2011
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