Bass

Bass= Back+Ass, One continuous part of the body. When you a see a girl out and she has a flat ass that is parallel to her back, so it is one continuous surface then curves in to adjoin the leg. It is the flattest of the flat asses. It is a travesty in nature because of it lacking visual appeal. This happens on all sorts of women, it is similar to the bad teeth effect and it can happen to the best and the worst women.

Yes that girl is attractive but she has a Bass. You know from her neck down to where her butt stops at her leg sort of looks like the letter J.