look up any word, like plopping:
 
1.
Where you perform the helicopter and cum at the same time. Spin it and fling it!
Steve- Hey babe, look at me!! Im doing the jellycopter!
Jacey- Whats a jellycopter?? (she is turning around to see)
Steve- Oooohhhh!!!
Jacey- Fuck!! You got it in my eye!!!
by AhizzleYO May 11, 2011
 
2.
What a small group of punks call fat people trying to act cool when really he/she isnt
"look at that group of jellycopters, hahahaha"
by o.0 ? December 12, 2005