1. cascading pile of cellulite, usually located on the mid torso section of the body but in some rare occasions flabalanches have been reported in the jowl and thigh regions.
2. often associated with creatures that use the sir name jabba. see: jabba the slut
A: don't look now but your cousin is takin' off her shirt again.
A: that's got to be the biggest flabalanche i've ever seen! that's some seven layer burrito shit.
B: shut the fuck up man! why you lookin?
A: your cousin's tore up yo!
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