Thanks, finally! Great to hear! That was a personal fantasy detail of myself I wanted to act out. I have different fantasies. In one it's a dare, the other its sexual and again in another it's a sadistic one.

Tomorrow we're gonna do the sadistic one.
To make it a little more tense, we made a deal that if she ever cums during a session, the penis has to be cut for real on video right after.

So therefor I would actually like to know more about what you wrote about numbing the penis. Problem for me is that when she does it for real to me, I would like to be hard. I thought about ways of feeling less, but those would not give me an erection. And then it's more like an operation than anything sexual.