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."
May I have an order of regular degular buttermilk pancakes? Without all the added jazz? Hold the blueberry smiley face, strawberry glaze, chocolate chips and whipped cream.
Usually a male who likes to encourage weight gain in his partner through the consumption of food. Feeders differ from FAs... whilst an FA is attracted to big girls, a feeder gets turned on by making a thin girl fat....or a big girl even bigger.