Castration is gonad removal. This is an imminent penotomy (n.b. not "penectomy"; that would imply that the penis is being cut out, not off, which obviously doesn't apply to external organs). That's a distinction, and a phrase, I never thought I would find myself typing on an Internet image board. I mean, what?
Translation copied from rule34.xxx via user Blookryynnn. Thanks!
I'm gonna cut you off...I told you not to go out, but you did it again.
She's talking directly to the penis, so the text uses 'going out' for 'cumming'