I’ll start by saying that only one adult ever tried to initiate sexual relations with me while I was a minor. I shut him down , and later wished I had had the nerve to explore then.
My earliest imagining of anything sexual I barely remember. I was being bathed in the old concrete deep sink in the laundry room. I must have been pretty small to have fit there. Fingering my butthole, it felt sooo good .
Then standing on the bathroom sink so I could look in the mirror to see that same hole. Then fingering it some more. I never told anyone that I liked how it felt.
A few years later in grade school a classmate who lived nearby me started showing his dick when we were playing. When we were alone he took his pants down to show, and wanted to compare with me. We compared and he sat down and grabbed mine to suck it. Was the first time I got hard with another person.
I let him suck me a few times , and did. Him too. Then he wanted to see if I could get my dick in his butt. 'Like how the dogs do it!' We tried but just couldn’t get it in there. Then somehow the parents got wind of it all and I was told it’s OK to experiment, but promise you won’t do that anymore'. Him and his family moved soon after.
The girls across the street and I playing peek a boo showing off our private bits.
Waiting in the car with my cousin who is a couple years older. Says he’s getting a boner and pulls it out. Hard and pink and hairless . It made me hard seeing him, but I was to shy to show mine.
My explorations as a teen were with other teens and so I had moved on to another level of sexuality.