Dude that's just easy access to the poop shoot. As long as the yoga pants don't look like they have on a soggy diaper I can appreciate the effort.
Lol the guy/girl ratio at my school is way off it's great shit ton of girls, plenty with fat asses it's just a disappointment. If you're gonna wear that shit do some lunges once in a while. A nice rack is good too but I can't resist a fat juicy ass in some tight yogas. I'd emphasize more on the ass but overall a nice synergy with the ABR (ass/breast ratio) is what I aim for, as long as there's at least some decent size. Not looking double flats