"You see, the cock and balls actually go backwards between the legs, being optionally forced up the arsehole, and are securely held in place by adhesive tape, thereby producing the illusion of a smooth surface - in many ways flatter than the external female genitalia. Anyway, spaghetti hoops for dinner tonight".
I think it would be funnier to launch straight into that explanation, to be honest. But mostly I've put it there as a funny response to someone saying they don't know how to explain drag performances to their children. Weirdly, the whole comment was removed for transphobia, but I've been told drag has nothing to do with being transgender.