Girls, why do you find your butt-hole so disgusting?

Essentially, why do many girls get self conscious and not want their butt-hole played with?

By in no means am I a fan of poop, but if I'm doing something sexual with a girl with her ass-hole, and "shit happens" I just shrug it off.

Thanks!
Girls, why do you find your butt-hole so disgusting?
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