This is a true story.
My name is Jack. I'm a young man from Southern California. After graduating college, I chose to live in a room in my parent's home. It was cheaper than paying rent and they had a pretty nice house. I had my own wing, with a large bedroom and bathroom. There was a path from my bedroom that went to the backyard with a patio and a hot tub.
Some nights after my parents had gone to sleep, I would grab only a towel and quietly step out and use the hot tub. Sitting naked under the moonlight in the hot water was usually my favorite part of the day. Naturally, I would often start feeling turned on during this relaxation and I would then shower or jerk off and fall asleep.
It seemed like I was the only member of my family who used the hot tub anymore. My mom was a morning person and I don't think she liked the chlorine's effect on her skin. My dad also worked long hours - but I remember him using the hot tub all the time after he bought it back in the mid 2000s.
My mom had been out of town for a little over a week because my grandma had just gotten out of surgery and needed help. My dad and I spent the week like we normally would. He'd get home from work and we'd figure out what to eat for dinner, then he'd watch sports or we'd watch a movie and he'd go to sleep and I'd go do whatever until I fell asleep.
But one evening, it was a little cold and gently raining - a perfect night to relax in the hot tub. It was around 9:30 at night when I heard my dad start to get ready to sleep. I went to the living room and we said goodnight. Then I grabbed a fresh towel from the linen closet and took the path from my room out to the hot tub. I quietly took the cover off the tub like I always do, then put my towel on the hook and eased myself into the hot water.
I sat there nude in the rain and after about 20 minutes I started getting hard and slowly started stroking my dick. A little about myself: I'm 6'4'' tall and a bit overweight; my dick is about 6.5-7 inches hard with normal girth. So there I am in the light rain jerking off in the hot tub in the backyard when I hear the patio door sliding open.
"Hey, are you out here using the hot tub?" I heard my dad asking me from around the corner on the patio.
"Yea. It's nice in the rain." I responded as my dick slowly began to get less hard in my hand. It was dark out with no porchlight, so I knew he couldn't see me too clearly.
"Mind if I join you?" He asked.
"Yea sure." I agreed. He walked over to the edge of the tub and put his towel on the hook.
"You don't mind if I go naked, do you? I can't see if you're wearing a suit or not." My dad asked as he took off his white t-shirt.
"Yea I'm not wearing a swimsuit." I responded and just like that, my dad slides off his boxers revealing his 8 inch long and nicely thick cock. My dad worked out regularly and it showed. He stood 6'2'' and had a strong build. I admired his toned abs and chest as he lowered himself into the hot tub.
He really couldn't see under the water, but my dick was still pretty hard. We did some usual small talk when after a few minutes, I started feeling a bit lightheaded. I'd been in the water for probably half an hour and my dick was half hard. The rain intensified a little and it felt amazing on my face, so I hoisted myself onto the edge of the hot tub to cool my body.
Now my dad had a full view of my dick and balls as I sat on the side of the hot tub, leaning my back against the adjacent wall and feeling the rain and the steam. He told me I was starting to look stronger and I thanked him. I rested my eyes a little bit and we both just enjoyed the hot tub and the rain. Once the rain had cooled me down, I dipped back into the water.
