Lupita knows stuff

I'm going to assume they don't mean the balls/testicles and are instead talking about the bit of skin that (I think?) is there (I have never seen a male's lower half, if you can't tell). Which, from fanfiction (please don't ask), I'm pretty sure is called a guiche, or something like that. I think it's spelled that way but I'm not sure and spellcheck hasn't underlined it, so I'm gonna go with that.

The perineum?

Or the gooch. Gooch sounds funnier.

The "Gucci"?