Someone being unusually fat, normally in the butt
“Oh man I was watching The Incredibles last night and elasticity is THICCC as hell”
Thicc meant to describe beauty AND COOLNESS.
TAYLOR Hey Katy! look at those cool jeans. those look thicc. Thicc means coolness.
Katy thicc? Oh yeah! That means coolness or beauty.
A secret code word for 'I am retarded'
Person 1: Thicc
Person 2: Oh so you are retarded?