You know those sweatpants that some girls like to wear?
The ones that say “PINK” across the rear end?
Sure, part of it’s an excuse to get people to look at your derrière, and to that I say “more power to ya, do your thang.”
But if you look at it through the eyes of an anthropologist, you might see something more along the lines of … well, Google “primate estrus”.
Humans are funny animals, aren’t we?
(Hat tip to @Sci_Phile)