In my early to mid to late 30s though it's easy. All I do is picture them with a poopy ass. Not a fetish thing, I find it disgusting. But I'm picturing a poorly wiped ass leaving skid marks in her underwear. Or maybe they didn't fully dry their urine soaked labia after pissing and it's a mess down there too.

It helps me think of them aa a normal person. I've met models & actresses and been cool as a cucumber using this method. And women are frequently really absolutely disgusting hygiene wise even the hot ones.

(http://www.autoadmit.com/thread.php?thread_id=5915964&forum_id=2#50212456)