It's all relative, but generally I mean 38 inches or more. My ATF (now retired) was 52 inches.
I've seen a few men make comments disparaging larger women, and frankly, it pisses me off.
Beautiful big booty is hard to find. Being rude to the plus size women means they are less likely to participate here.
Especially in light of the recent restrictions.
Any plus sized ladies looking for a generous face to sit on, please send me a PM.