The first time I encountered this vibe was at a hen party. For something so small, it packs quite a punch!
I have a female and a male submissive. When I touch it to the girl's clit, it sounds like she's breaking the surface of a lake and taking her first breath. For the male, the bullet is small enough to fit in his urethra. If you enjoy CBT, you'll enjoy this. For its price, I cannot recommend this highly enough. Five stars are the most I can give here, but I'd surely give ten if it were available.