Definitions by chunky chicken corn chowder

arm-a-jello 

when you get older or are just really flabby and then lose weight you get extra skin under your armpit that you can jiggle like jello.

man 1"Damn man you got some wicked arm-a-jello"
man 2"I know its so fun to jiggle"

arm-a-jello by chunky chicken corn chowder August 3, 2007