The Anal Cavity - also were your large numbers of bum hair occur... when they get twisted during exercise, they start to sweat in bundles, leaving a sweaty gooch marks
After working out at the gym, my friend said to me: "Gosh, my Anal sprout is tingling... feels a bit sweaty if I'm honest".
A hole too tight it closes at young ages 3-7 years after birth unless it is stretched.
Big Man: Do you have an anal deficiency?
Tiny Bitch: Yeah... Since I was 4 my hole has been closed.
Big Man: I'll just make one.
Tiny Bitch: oh shit...