The same thing happened to me with the written word …I was almost eleven when I found an old adult paperback in a trunk. I lay on my bed and read this woman’s descriptions of her “crack” and her “pubic area” and how a man “dived into her” with his “man stick”. I found it felt really good to press my crotch into the mattress. Then one day I visited my cousins at their farm. We were outside by their pool and were sneaking cigarettes and talking about naked women. One cousin asked me if I had learned to cum yet. I said I didn’t know about that but I did like pushing against my mattress. They decided to make me cum right there by the pool. One cousin got me to pull my swimming trunks down and expose my penis. Both he and my younger cousin took turns tugging and jerking my cock until it was hard. Then my older cousin showed me how to masturbate it.
He slid his hand up and down my shaft over and over, and I was shocked but really liked the way it was feeling. All three of us took turns jacking off my dick. Then it felt very very good all of a sudden and I stroked it as this white stuff squirted out and splashed into the pool. I -obviously – had never felt anything so good in my life! My younger cousin stood next to me and jacked himself off too and I got to see how the cum came out of his cock too. They told me I could do it anywhere now — all the time. I got home that evening and hurried into the shower to see if I it was true. Could I make myself cum again? It worked! I was overjoyed and found that I could also make my dick cum rubbing it against the sheets on my mattress as I read the adult paperback, which I now understood much better. For about a week I don’t think I did anything else but constantly masturbate. I was so happy that I could do this wonderful thing forever! I guess that’s the cause of my addiction.
I told a friend and we decided to jack off together inside a space in the shrubbery in his back yard. He had a porn magazine with pictures of a woman fondling her tits. It was the first time I had ever seen a porn magazine.I soon found out how to get my own porn magazines and more adult paperbacks. I was masturbating two or three times a day to my porn collection. I never wanted to stop. From that day to this I still masturbate every day and still love my porn.
Source: (2) What caused your addiction? – Page 8 – Onania Masturbator Forum