"You see how picky I am about my shoes, and they only go on my feet."
When it comes to analogies, there's the good, the not-so-good and, of course, the downright ugly. Cher (Alicia Silverstone) came up with one for the ages in Clueless when she was asked about her virginity. If you don't remember what she said,
maybe this will jog your memory - "shoes."