I have my slaves cock attached to my Erostek unit, an electrical stimulation toy that can feel like a gentle tingling at the lowest settings or a painful stinging throb at higher intensities. The sensation is felt beyond the electrodes themselves and affects a larger area of the genitals, impossible to do with ordinary vibrators. The sensations are widely varied in intensity, repetition, and character. I toy with him, making him moan in pleasure, and writhe in pain depending on how high I turn up the knob. Then I insist on stimulating him manuallyyet denying him the pleasure of release. The pleasure and pain alternate until he is unable to orgasm.Electrical play combined with tease and denial is a favorite of mine and you will see why.