I have only known my step dad as my real dad since my mom married him when I was four years old. He has been a wonderful dad and I love him very much.
Although he doesn't know it, he was also the source of the first of what I consider to have been a 'sexual experience', as for as long as I can remember I would often get into my parents bed, between them in the morning, and did so until I was a teenager.
One early morning I crawled into bed with them. I was between them on my side against my mom's back. My dad I could hear lightly snoring but my mom was awake enough to put her hand on my leg and gave me a squeeze.
I was laying there a few minutes and pulled my legs up more which pushed my back more towards my dad. When I did, I felt something 'poking' me in the butt! I couldn't figure out what it possibly could be, so I rolled over to face my dad and pulled up the covers to take a look.
My dad was naked! Which I had never seen before, and there, sticking straight out of his hairy crotch was his fully erect penis!
I had often seen him in his underwear, and would naturally look at his crotch and the lump there, but this time it was huge! I couldn't figure out how it got so big! I recall almost being concerned that something was wrong with him at first, but then recalling seeing dogs mate or have erections and knowing that this must happen to men too!
I just stared at it for a long time, the head of it was about the size of a plum, a pink smooth plum with a slit in it! I reached in without thinking and touched it, making it 'bob' up and down.. and again... it was warm to my touch. My dad was still snoring.
I was awakened that morning in more ways than one, as I rolled back over and eventually got out of bed... it excited me and the memory of it would return often especially when I began to masturbate myself.