
It's called urethral insertion. In males, you put it in the penis and in females, there is a small hole a bit above the vaginal hole (below the clitoris) You put a thin object (made of soft and flexible material) or liquid in the urethra. It is used to directly stimulate the G spot or the prostate (?) It is kinda risky if you don't do it carefully. (Infection or even something rupturing) In fact, it is not recommended to do it alone or with an inexperienced partner. There are even people who are trained at doing it. I personally would never try it though... It's too scary for me..... ( ̄∇ ̄")
I wanna know. Can you really stick pen/finger there???
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