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1.
nickname for heavy-set short person that appears almost to be a perfect sphere
she looks like a bouncy ball!
de Di A. Rea 4 mai 2008
 
2.
To jump up and down making your testicles bounce, in turn making bouncy balls
check out these bouncy balls
de Ron Ron Juice 28 janvier 2011
 
3.
A term that can be used to describe a cutely small, fat kid who appears as round as is tall. They look like you could turn them onto their bellies and bounce them up and down. It is often used as a schoolyard insult amongst young children.
"Ahhhhhh, he's a little bouncy ball. Look at him eating that ice cream while it drips all over his face! How strangely cute!"
de Cato at OrSU 24 août 2009