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1.
The layer(s) of extra skin under the chin. Most visible on those with a excess of body mass. Commenly jiggled by people trying to annoy the victim, or get a good laugh out of the people surrounding the victim.
Dow: (sitting in class)

Bill : (jiggles Dow's chin fat) "HOOBALOO"

Dow: Ahhh!
by Fugget McDoogle December 04, 2006