I recently discovered that my 14-year-old stepson, who lives with us full-time, has been stealing, wearing, soiling, and hiding his toddler sister's pull-ups. I've found them after he hides them in his closet, which also serves as a general storage area. After discussions with him, I'm certain that wearing them is a pleasure thing for him. (He says "curiosity," but this has been going on so long that he knows what it feels like.) He has even stolen some of the neighbor girl's Baby Alive doll diapers to wear and soil. We've told him he has to stop stealing diapers-from our neighbor, because stealing is wrong, and from us, because these things are flippin' expensive. We are pretty grossed out by it, despite being pretty open-minded people. I may be more grossed out by the prospect of piles of dirty diapers hidden somewhere in the house, but the thought of purposely peeing your pants isn't pleasant either. I believe we have a fetish growing here, and I don't think a parent needs to be involved in it, but he's stinking up the joint.