I had a similar experience but it was my sister and our cousin and they were a few years older than me. I was 12 at the time. I actually ejaculated while my sister was holding onto my balls squeezing them and my cousin was sitting on my face laughing maniacally. That only made them laugh all the more. Reliving This in my mind became my chief masturbatory fantasy for the next several years. Then when I was 16 I saw an advertisement for a dominatrix whose listed interests included bondage and humiliation. I contacted her and lied to her pretending to be 18. I was lucky that she liked young guys. I had saved up to pay her the $300 she charged for an hour of her time. She tied me up naked and spent the next several hours teasing me and ridiculing my tiny package and feminine looks. She never asked for money from me but rather just kept inviting me back for play time which turned out to be a few hours every week for nearly a decade. She was about 40 when we first met. The best times were when she dressed me up in frilly lingerie and had me parade around with my exposed little hard-on in front of her friends when she held bondage parties. She had lots of clients who would attend those parties and lots of dominatrix friends who would also go. But since I was such a cute and adorable little slave boy I never had to pay.