I've come across this odd body language quirk so many times it's beginning to bother me. Haven't found any info on it, so thought if someone here would be able to shed some light on it.

Essentially it's just a weird leg position where the person (so far all have been women)
stands on one foot and put the other foot on top of the one that they are standing on. Feels like an super unstable position, but they all manage it just fine :)