you stick your finger in your own butthole, and then walk up to your victim and put the the same finger (in the shape of a fish hook) into their mouth and the inside of their cheek. Then pull like you are catching a fish.
He pissed you off? Give that dude a rusty fish hook!
Jeli fish, or rather known as jelly fish, is a very interesting organism, with a very excruciating tone of speech. This speech can sometimes be lame or ANVIous. All beware because this organism is well known of its LAIs. Don't be tricked by them.
You are such a jelifish! That joke wasn't funny at all! You're such a LAIer!