Grinding Into the Soft Carpet, a New Way to Masturbate.

Home alone with my parents away with only a family friend around to watch us kids. He was in the guest room upstairs and my siblings playing video games in one of the rooms adjacent the guest room. I being bored and curious about a new found sex channel that was fuzzed out but you could make out some sex going on. I didn't want to risk being caught with my penis in my hand or sticky hand. I decided to try a new technique I discovered by accident. I was laying on my stomach on the floorband thumbing through the cable channels. I noticed on the guide there was a sex channel but it was more of a pay per view style and was fuzzy and the channel would make a buzzing noise that was quite loud.  So wouldn't stay on it for long for fear of being heard or suddenly caught watching it. I had the TV on a channel I could turn to quickly like ESPN or a movie channel. Then turn to that sex channel watching for a few seconds at a time, glancing over my shoulder and listening for anyone walking downstairs.  I could make out some sex and naked women being fucked here and there in random spurts. I could feel I was beginning to get hard and felt my 11 year old penis getting hard but how I was laying on it, it was hurting.  So I repositioned my little hard penis so it was pointing down towards my feet. I normally I liked to not wear underwear with my soft basketball shorts but I didn't want to make a mess so I wore my underwear, at least this first time. As I continued to switch between channels not wanting to get caught I was getting harder and harder. I could feel some wetness now in my underwear, squirming I realized that it was feeling kind of good pressing into the soft carpet.  The more I squirmed the better it would feel. I squirmed side to side and that felt good so I became curious how it would feel if I rocked forward and back. That was a eye opening feeling because pressing into the carpet and rocking forward and back I felt I was getting wetter and with my still hairless nut sac and penis it felt better then I really expected.  I was getting really worked up by the spuratic sex and the risk of being caught I got lost in rocking back and forth and now pressing my hips into the carpet my feet with toes helping my grind and hump, suddenly I felt this tingling feeling I felt before but didn't care. I kept going faster looking over my shoulder, I could see my shorts being pressed into the crack of my ass and suddenly I was shooting cum into my shorts caught by my underwear. Trying not to moan it was warm and wet coating my hairless ball sac with my goo. My fingers digging into the carpet helping me further my grinding.  Finally the feeling subsided and I'm laying there on my stomach my underwear wet and my little penis and hairless balls soaked with my cum.  The great thing was I didn't really need to clean up or hide because if someone walked downstairs they would have no idea I just came in my little shorts and underwear. I loved this new technique because I felt I could go again and again.  This is the point I knew I could masturbate without worrying if I just wore underwear to catch my wetness. I liked how it felt with my balls wet. First of many sessions like this.