I think this one is pretty easy, although there’s a subtle nuance to it.

Before the comments start, I should add, as you can see from the left photo, that the individual had already done half, likes it, and is very aware of the consequences and issues involved. As a point of trivia, for most people, the “stump” is extremely sensitive, and erections are much harder afterwards, so in general terms even though this is a removal procedure it is most definitely also a sex-positive procedure.