PASSED OUT PLEASURES SeXStoRY

I had been a bit curious for some time about my girlfriends 19 yo son. I'd heard that he might be bi-sexual, and on occasions I noticed he appeared to have a fairly large penis though I hadn't yet seen it. One Friday night he was out partying, and didn't come home till 5am. I heard him go into his room, but he made no other sounds after getting undressed, I closed my eyes and went back to sl**p.The alarM clock went off at 6:30 to wake my girlfriend for work. I made coffee as she got ready to leave. She asked me if her son came home last night, he was still out when she went to bed. I told her I heard him come in but wasn't sure what time it was, no need to create any problem for him. She finished her coffee and headed towards the door, I followed behind her for good bye kisses and to lock the door behind her. As she stepped out she asked if I would check in on her son to make sure he was OK. I told her I would and kissed her goodbye. I wasn't ready to stay up just yet and headed to the bedroom. As I passed the boys room I tapped lightly on his door and called his name, he didn't respond so I opened the door just to check on him. He must have passed out after taking his clothes off when he came in, he was laying on the bed totally naked. I finally got to see just how big his cock was, and I walked in next to his bed. I softly called his name several times but he didn't move an inch, he was dead to the world. I gently ran my hand over his cock and estimated it to be at least 7 inches. As I looked him over and felt his fat cock a bit more it began to swell up and it got longer as it got hard, still he didn't move a muscle, except for his cock which was now standing up and had grown to 9 inches. I couldn't resist taking advantage of the situation and began gently licking and sucking his huge throbbing cock while he continued to sl**p soundly. I was enjoying it very much and soon nearly 10 minutes had passed, just then as I was stroking his shaft with my hands I felt it throb a couple times as precum began oozing from the tip. I slid my mouth over the head just moments before he exploded, his cum gushed into my mouth as I sucked hard on his monster cock. When he stopped squirting I let his cum roll down over his cock onto his pubes and balls leaving him drentched with his juices. I left him there and went to the bathroom to masturbate to relieve my aching boner before going back to bed. A few hours later I heard him in the bathroom, I got up said good morning through the door and asked how his night had been. He said it was OK but he need to take a shower, he was a mess. I smiled as I thought about what I did to him that morning, and got an instant boner as I imagined him in the shower washing off the cum I left all over him.