One morning, still nude walking into the garage for something and saw a bunngee cord hanging on a rack. Call it a light bulb moment as I hung the cord over the base of my "morning wood", and stretched the two ends down and back up my ass cheeks like a thong, hooking the two ends around my waist. An instant full erection that demanded my immediate attention, the orgasm and ejaculation so intense my head spun as the cum flew across the garage. The tension at the base of the shaft, no restriction around the testicles along with the anal stimulation of the thong effect proved very powerful. This solved the slide down problem of rings, and gave me a product men could wear for long periods enhancing their appearance and enjoyment at the beach or bedroom.
Many prototypes later I took the final design to a men's boutique in the city that specialized in sexy swimwear. I gave the owner one of his own to try on and let him watch me as I slipped into mine. Another patron in the store noticed what was going on and joined in on the conversation and had to have one also. The three of us enjoyed a group masturbation experience and the owner order three dozen on the spot. The BunnG was born and I have not had sex or masturbation without it on since.