When you either have sex more then once or twice in a set amount of time, or jerk off in a set amount of time. Sometimes your semen will come out looking like chewed up jello. This is because when you do not have enough time to reproduce the shit so all of the shit in your lines has to go through. So you're basically just cleaning out the pipes.
When a man dips his penis into unlit napalm and proceeds to stick it into a woman's vagina or rectum, or a man's rectum, pulls out his penis, and then lights the given orifice on fire, effectively incinerating the receiving party from the inside out.
Next time I see my ex I swear to God I'll get the boys and we'll napalm jelly-dick that bitch!
A derogatory term for drug-users at dance clubs. Most commonly employed when describing Methylenedioxymethamphetamine (Ecstasy) users. The term itself comes from the fluid head movements done by those described; appearing as though their neck is made of jelly.
"Yes, Jason and I used to hit the clubs all the time, but we have not since he became a jellyneck."