I always brush my teeth while my father is in the shower. We live alone, and so he just keeps the glass closed while I clean my face and stuff. Sometimes I see him but I am just another guy.
So it didn't matter to me. I was thirteen and I really didn't masturbate. I kind of knew what it was but hadn't thought of it much. I had wet dreams a lot and I liked them a lot. Anyway, I went in one morning, and I started to brush my teeth. I was curious about this weird sloshing noise coming from the shower, but I shrugged it off and kept brushing. Then suddenly it stopped. My father said nervously 'Son I didn't realize you came in for a second. I thought you were asleep!' he was breathing hard. I looked at the glass to respond when I saw it had opened, and he was standing there with a huge erection!
I was so freaked out I just left and went to my room, closing the door. I laid on my bed, and I just sat there confused. Then my dad walked in with a towel on. 'Son, I'm sorry you saw that! I thought you weren't awake.' I sat up. 'What were you doing?' I asked. He looked at me curiously, and then got a knowing expression. 'Son, you didn't know?' I was confused.
'Didn't know what?' my father sat down on the end of my bed. I saw that he still had a boner through his towel. He looked at me and said 'Son, I was masturbating. Do you know what that is?' I was stunned. 'Well kind of, but I didn't think you did it!' 'Son, do you do it?' 'No, I don't even really know how!' He looked at me all thoughtfully again and to my shock said 'Well get naked and come into the shower if you want to know how.'
He got up and left, and then I heard the shower again. I was stunned. I only really knew it was touching your penis and cumming, but I really didn't get it. I was so curious, yet I had a weird feeling. I finally came into the shower where he was still sloshing.
His back was turned and he didn't know I was there. I undressed quietly, and the sloshing grew so loud I entered without him knowing. My dick was hard as a rock, while I was so nervous. He turned when I said 'Dad.' He looked at my hard-on and then said, 'Son, I am so happy you'll let me teach you how to be a man.' He sat me down on the small counter where the shampoos sat and pushed them aside. Then he squirted some soap on his hand and took hold of his massive erection. As I watched, shocked, he told me to imitate him. I grabbed my penis uncertainly and began to do what I saw, until I was shaking with pleasure! He let go of himself and pulled my hands down. Now he said 'Son do it to me!' and I grabbed his, and jerked him like there was no tomorrow until he shot cum like there was no tomorrow! Then he pushed me against the wall and jacked me until there was no tomorrow! I shot sperm everywhere!
Every morning we jack in the shower till we cum, and I go to school in an unusually happy mood to have such a cool dad.