When I was 16 yrs old my best friends family asked me to watch their house when they were gone of a week's vacation. My friend had a really hot sister two yrs older than us who was also a good friend. I had been masturbating daily for several years at this point, and this girl was my favorite to think about while stroking myself to orgasm.
After watching their house for a couple of days, which consisted of merely driving over, getting the mail in and feeding the dog, I suddenly got a wonderfully horny idea. After taking care of the chores I wandered into the girls room and carefully looked for some of her underwear. I got a nice pair of her white panties and brought it up to my nose and sniffed it deeply, inhaling her wonderful, sexy scent.
Of course this instantly got my dick hard. I undid my pants, dropped my shorts to the floor, sat on her bed and commenced to pleasuring myself. For years I had looked at this girl with lust, longing to go to bed with her. Now I held her sweet panties to my face while I jacked off.
It did not take long until I started to feel my cum welling up inside of me. I stroked faster and faster, my breathing got ragged and then, over the top I came! Spurt after spurt shot from my hot dick. The orgasm was huge and I thought I just might die. I caught most of the cum in the pair of panties and completely soaked the crotch. I saw one of her bras laying nearby and I reached for it and wiped the last little bit of semen on the inside of one of her cups.
After recovering, I pulled my pants up, and carefully placed her undies back where I had gotten them. For a couple of years after that wonderful experience, every time I looked at her, I wondered if she was wearing the panties and bra that I had orgasmed into.
To this day I like to jack off into my wife's panties once in a while and I always love sniffing them after she takes them off at night.
Now I need to go get some lube and jack off again...let's see, where are my wife's panties...?