The belt-like portion of someones mid-section that shows when a fat person wears a shirt/top that is way too small for them. The exposed skin is about 2 inches wide and goes all the way around the body like a belt.
Dude, that guy needs to stop wearing a medium when he should be wearing an extra large, his flesh belt is gross!
The fat roll hanging over a girl's low rider jeans, while wearing a belly shirt.
That girl has a gnarly flesh belt. She should be wearing sweat pants.