lower back fat

A middle aged man or women that has lower back fat. Generally of average weight but our of shape. Fat collects in their lower back.

Please stop gripping my lower back fat (lbf).

by Lbf lover September 24, 2016

Fat back

Some one who has a fat ass back.

I called one of my friends a fat back because they have a fat ass back!

by Gay legs May 25, 2018