Mediocre sex - comes from the saying "Sex is like jello. When it's good, it's really good. But when it's bad, it's still pretty good."
A: "So, you shagged her last night? How was it?"
B: "Jello."
A: "Beats watching TV, right?"
by Prp Guy April 4, 2006
slang for a gelatin dessert (based on Jell-O, a common brand name of gelatin dessert)
If you want that jello, wait until after dinner time.
by The Return of Light Joker October 25, 2009
another term used to describe the quality of a butt.
1) Tim has a nice, round jello!

2) Dang she has a nice jello; it's so jiggly and wiggly.
by jaja! December 17, 2009
You got Super Bowl tickets? I'm so jello.

OR

Oh my god are those Manolos? Jello!
by The Ly March 14, 2007
ass, usually that of a female. Booty.
Mommy, hello. Make it wiggle like Jello.-The Pack
by J-Mice December 9, 2007