look up any word, like trill:
 
1.
1. Sloppy fat beer gut, as in "his belly do lap over his belt."

2. Loose skin hanging under the neck, especially of a cow.
She's so fat you gotta lift up her dewlap to find her snatch.
by Steve-Oh November 19, 2004
 
2.
A fat person's double chin. Originates from a term used to describe "a pendulous fold of skin under the throat of a bovine animal"
I punched that fat ass right in his dewlap.
by louie bloo August 16, 2011