This is the awesome thing that it makes both partners happy. I tried it with my male partner, and the vibrating bullet on his cock was really impressive, apart from the fact that his erection, too, was harder. He seemed to like it too, I mean, we spoke about it, and yes, he enjoyed, but I could see it on his face too while doing it.

Moreover, I sometimes play with the bullet alone (yes, I keep this cock ring, it's mine), just as he may put the cock ring without the bullet in it, and then we put them together again and have some good quality fun.