Not My Best Night

I was sexually active at the age of 15. Actually quite skilled, especially orally. My boyfriend at the time (Jake) was 17 and quite large downstairs. He very much enjoyed being with me because I had the ability to deepthroat his large package.
Mom and dad had a weekly date night. They always left my older sister in charge of me when they were gone. She was cool and would let me bring Jake over for sex while our parents were gone.
One night Jake came over and we went in my bedroom. We had a favorite sex act and position. That night we went right for it. We immediately stripped down. I got on the bed on my back and hung my head off the edge of the bed to let Jake have the best shot at my mouth and throat. He loved it and would just go to town fucking my throat! He would lean over, pin my wrists down and go deep. Well that night we got a little too carried away. Jake had me pinned down and held his cock in my throat too long. I couldn't breath and blacked out. I don't know how long it took him to realize something was wrong. But when he did he freaked out. Jake ran into the hallway and screamed for my sister. She came running in. I was laying on the bed naked and unconscious. Jake was standing there with 9 inches sticking straight out. My sister was shaking and talking to me as I was coming around. When she realized I was OK and jake tried to explain what happened she laughed her ass off!
She never let me live it down. Also she was quite impressed with Jakes package and I am pretty darn sure she sampled it after we broke up.