When a man ejaculates on a woman's stomach, whereas the "jelly" is a metaphor for the man's ejaculate.
I didn't want to wear a condom, and the girl I was banging wasn't on the pill, so I pulled out and gave her some "Belly Jelly."
by DoomDeath August 04, 2009
Belly Jelly is when a man cums in a woman's belly-button and proceeds to suck it out. It's not for people with deep belly buttons, or "outie" belly-buttons. Ughhh, gross.
by Jellybabybitch July 26, 2017