Jello Surprise 

The hard, spongy textured layer of jello found at the bottom of the bowl. It formed when jello isn't eaten for a number of days, thus becoming hard and losing taste. The act of biting into this layer gives you a nasty taste and texture in your mouth...SURPRISE!

Mom: Tonight we're going to your aunt's house to have dinner.
Child: Oh great...then for dessert we get to eat Uncle Don's week old jello with the jello surprise.

Jello Surprise by Mikedakwik February 29, 2008

jelly surprise 

When someone lets out an air biscuit and unintentionally receives the oozy mud butt sensation in their under britches.

We were having a bake off and i baked a cookie sheet of air biscuits, busted ass and ended up with a jelly surprise.

jelly surprise by flatulence August 28, 2006

jelly donut surprise 

when you go down on a girl and realize she's on her period.

I went down on her and got the best jelly donut surprise

jelly donut surprise by MarlonS March 4, 2008

jelly ball surprise 

When you're having sex with a girl who is on her period and you cum inside her hard enough to cause her to queef out a jelly red ball of slime back at the ejaculator

Last night me and Patricia were getting it on and she told me not to use a condom because she's on her period. It was awesome, but jokes on me because she gave me the good ole Jelly ball surprise once I finished with her, I felt like I was being born again

jelly ball surprise by Skankkhunt42 April 28, 2021