To add to the affect, apologize, then go in for a hug.
When they go in for the hug also, pull back and make the jellyfish motions with your arms while saying, "JELLYFISH!"
Known to be annoying as hell.
Most jellyfish have tentacles and a basic nervous system, though they lack more complicated organs, and they are allegedly composed of about 95% water. They usually catch their prey by brushing potential victims with their poison-spouting, long tentacles, which can be anywhere from inches to several feet long.
Slang: various sex acts.
Man 1: "Did you hear what Drew & Kelly did last night?"
Man 2: "Nahh what"
Man 1: "Kelly jellyfished him again"
Man 2: "Damn eighth graders don't know how to give a proper handjob"