Electrostimulation

I been hearing about electrosex. what is it and what does it feel like

There's no simple answer to that question. Please look up VIOLET WAND, TENS UNIT and CATTLE PROD. Each device has different uses and sensations, from mild and erotic to intense and painful.

I've been playing with a TENS unit. I think the key is the types of electrodes you use. There are other forums on this site that cover that stuff but are not very active. My feeling so far is that it is in the category of controllable pain. Sometimes it may feel like needles poking you, there are many different waveforms. I've also heard that the devices that are specifically created for electrostim feel entirely different.

There are internal electrodes such as dildos with conductive strips and external electrodes, mostly using conductive rubber.

have fun - look up electrostim