Suppository and masturbation - when it started

For me,

It started at the 8th standard, I was always a role player. I was enjoying betel stalk suppository in an in out motion in my rectum, thinking my mom is giving it. Immature I was at the same time I was rubbing my little hard thing against my pillow. Suddenly something happened in body and i found the area around my penis and the pillow was wet, which made me scared. I thought might be I have urinated.... however it was not too late for me to discover the actual THING!! I started my masterbation with suppository. Anybody else?