The inner skin of the buttocks, next to the butt
crack, that runs from the inner butt cheeks to the inner thigh.
More noticeable on heavier women.
Instead of the thigh gap, chubbier women have this from where they walk or it heats up and turns darker and noticeably wrinklier.
Keynote: for the
BBW lovers it’s the sexiest part on a fat chick and
fat admirers tend to go for this portion when engaging in intimate activity.
Not to be mistaken for gluteus sulcus
TLDR: inner
booty thigh flaps on a fat chick.