Top definition
A move used by inexperienced teen girls. Instead of gripping the shaft like they should, the girl instead just uses the ends of her fingers on the tip, so that her hand looks similar to a swimming jellyfish.
My fifteen year old girlfriend just gave me a jellyfish handjob. I told her if she doesn't grip it next time, mr. backhand comes out
by ihatebuffering March 06, 2011
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