welcome to healthcare magic
Sexual stimulation by self or others is a natural phenomena & Electrostimulation is an abnormal thing to do.Please understand that when you get married in future you are not going to do any Electro sex ;you will do it like normal people;also you won't have any electro babies.
It is a harmful practice which may lead to erectile dysfunction
;damage to the organ ;& finally infertility
.So keep sex normal & don't practice such methods which will spoil your future sex life.take care.