Nylons and panties
I was about 15 when I first discovered my sisters Amy's nylons. She was 18 at the time. She would hang her nylons in the basement to dry. At first I thought they were just annoying.
But after running into them several times, I realized that they had an abrasive quality, almost like soft sandpaper.
Just becoming aware of my sexuality at the time, it wasn't long before I began to start experimenting with them, and started to drag her panties gently across my cock.
This was just the correct mixture of pain and pleasure to cause my cock to get greatly aroused. It also probably didn't hurt that I would fantasize about Amy wearing the nylons at the same time.
I didn't dare masturbate in the nylons, as I did not want to leave any evidence of my self-abuse. I just used the nylons to bring my cock to a quick erection, and then would masturbate separately.
About the same time, I also discovered Amy's panties. Some of them were soft cotton or silk with lacey edging. They were in various colors, mostly white, some pink and pale yellow, and one black and red pair each. I tried to arouse my cock with these, but they were too soft and not as stimulating as the nylons.
Then one day I discovered another use for the panties. My mom had asked me to put a load of laundry into the washing machine. I came across one of Amy's yellow panties that had a dark stain in the crotch area. Not knowing what to expect, I tentatively took a whiff. I was in instant heaven.
I detected a hint of some urine, mixed with some sweat, and some other scent that I couldn't place but that just made me heady. I had discovered another way to help me develop a boner.
I was suddenly volunteering to do the laundry much more for my mom. At first I would use Amy's nylons to stimulate my cock, and sniff her used panties at the same time to heighten my arousal. Then I got real daring and began to suck on the crotch area of her used panties, imagining at the same time that I was licking Amy's clit and sucking her pussy juices. I know that it sounds disgusting, but do not knock it until you try it yourself.
I also decided now that it was safe to masturbate with Amy's panties, after all they were going into the washing machine anyway.
This went on for a few glorious weeks. And then the inevitable happened and Amy caught me in one of my full-blown masturbation sessions.
I perved with my sister's underwear too. Sniffing and jerking like a wild animal.
My mom asked about the stained and filthy sheets, and the smell of my bedroom. She found my sister's panties under the bed.
She find out about your diarrhea drinking obsession?