I was home alone one day from school sick, watching t.v. laying on the couch and I fell asleep, when I awoke I noticed I had a large erection. Normally my erections would go away after a couple of minutes but this one was persistent. I started rubbing my soft hairless scrotum which felt good, then I remembered one of my friends talking about rubbing your boner back and forth.
I decided to try it, so I took a hold of my long wrinkled foreskin with my thumb and two index fingers and slowly started sliding it over the moist purple glans and rolling it back down my shaft. It felt amazing! I kept doing that for a good 15 mins or so when all of a sudden my penis head went extremely dark purple and puffed up very large, then shot out four squirts all over my lower tummy, then I pumped my foreskin back and forth slowly again and more oozed out over my pubic region.
The next day back at school, I told my friend of the experience and we tried it together that weekend, but that's for another time.