/vt/ - Virtual Youtubers

I'll post my top three

Marine:
Has had so much anal sex that her sphincter muscles must be completely loose and worn out. That muscle is designed to tighten to retain feces until released, so the sphincter could potentially weaken. allowing a turtlehead to paint her underwear like an artist's brush on a pristine canvas.

Mori:
Alcohol may make the digestive system work more quickly than usual. As the contents of the stomach will pass through the small and large intestines faster, the body may be unable to absorb the normal amount of water back into the body. This lack of reabsorption can result in a loose, watery stool, and thus a glorious yellow mustard mark.

Ollie:
Spicy foods contain the chemical compound capsaicin, wich causes some irritation to the gastrointestinal tract as it is digested. even causing diahrrea since capsaicin may increase the speed at which food moves through the gastrointestinal tract. Also, the hot and humid clime is particularly conducive to keeping her anus sweaty and her pantsu full of marks.