two lines on the lower back, they are genetic, and most men find them very attractive, they are not just for "fat" people or "anorexic" people. that makes no sense.
Back dimples are a sign of sexual beauty! They are mostly genetic but also common in athletes. They are sexy as hell!!! When you have back dimples it means you have a nice Ass!!!! They are on the lower back and found more common in females then males... but very rare all together!!!
2 indents on lower back. Mostly genetics but found in some athletes.; Usually means you have a nice ass. Also a good place for a man to place his hands when "hitting it from the back."