When I was about 14, I was at a resort with my family while we were on summer vacation. My father and I would play tennis after dinner in the evening and then shower in the locker room before going back to the room. The shower was just one open room with several shower heads, but small for what the number it was supposed to accommodate. One night while we were showering, I started fantasizing about a cute girl I saw earlier that day. Before long, I was sporting a big, throbbing erection. I was so aroused that I took the risk to start masturbating right there in the shower with my back turned to my dad. It wasn't long before my dad looked over and said, 'are you jerking off??

I was really embarrassed. He made turn around. I tried to hide my erection with my hands, but he made me pull them away. He wasn't really angry and I think he was a little embarrassed himself as he didn't know how to handle the situation.

In spite of all this, I was still really aroused and panting noticeably. My dad jokingly grabbed at my erection and kind of mockingly stroked it a couple of times. I couldn't suppress a moan when his hand slipped over my penis. It had only taken a second, but I could feel the build up faster than I could react. The next moment, I was squirting long white jets of semen just in front of where he was standing. I don't know who was more surprised or embarrassed at that moment - him or me.

The worst part for me, I think, that with all the sexual tension (and release) was that my father himself started to get an erection. I really didn't want to see that, it was bad enough that completely lost it in front of him. Fortunately, he's never said anything about it since. It was something we both wanted to forget.