It’s all about medium cut jeans with high cut thongs where the straps come up above the jeans…
If ya dont know - GET ta know 
I think they look great, but I agree it takes a certain kind of girl to pull it off. If the abs/hips aren’t tight, then it may make the poor chick look even worse.
Some chicks are tight enough to wear low cuts and look good. The average chick around here has too much belly lard to pull the look off with grace. Some clothing styles can flatter average women and others like the low cut jeans only work on the real hotties. The same thing goes for navel rings. If it’s in a nice flat belly with visible abs it’s hot. If you have to part the rolls to find it, it’s a joke.
I like them because if a girl pisses you off and she conveneintly has a pair on, get up behind herand then just use all of that strength you have gained from lifting and pull those fuckers right down to her ankles. Another good reason is when you are about to get funky with a girl wearing that type of jeans, then they are that much more fun to get off instead of the traditional way, just grab on with both hands and yank them off and wham bam thank ya mam!