Mmm. Dunno about other guys but when I've cum, I am no longer turned on. I could still do something, but I really would not be into it. In any case, all the chicks I sleep with get off before me, anyway. But, ignoring the endorphins and getting back into it *after you've already cum. I couldn't do it. But yeah, that makes sense. If they experience rapid ejaculation and know they always do, might as well get her done first *then move to 1-2-3 boom.