I was at a friend of mines house, hanging out watching tv when he decided he was goin to make some food. After a few minutes I had to piss so I walked out and on the way to the bathroom I noticed his little sisters room door was wide open.
I poked my head in and saw what you would expect in a typical teen girls room. She had a bra hanging on the closet door handle and I began to get a boner thinking about her wearing it. I walked over and brushed my hand against it before picking it up and smelling it, it smelled so good.
After a minute I worked up the courage to unzip my jeans and take my dick out, and for a while I just walked around brushing my dick all over the place, rubbing it on her pillow, sheets, clothes, the bra, etc.
As I looked around with my dick I found her dirty clothes hamper. Sure enough there was some fresh panties, which I picked up and smelled, while another pair was working my shaft. I blew a huge load onto the pair on my penis and put them back in the hamper, but didn't wipe off with them.
Instead I just let my cock drip dry on the floor and her bed, still brushing it on everything.