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1.
A person with a grabbable, soft, ripe ass.
Martin is a real jiggly butt. I love smacking his ass.
by AnalQueen February 17, 2010
 
2.
Butt type pokemon. Typically found above toilets. It's attacks include headbutt. This pokemon evolves into ButtOx
"Jigglybutt, use your buttslam! Wow! It was super effective!"
by Elzac July 28, 2008