>>279653651You see, the magical bullshit penis is warping the woman's mind with lust. If she accepts it as part of her body, then she's just super horny. If she doesn't, then it's a dick unattached to a man to pleasure herself with. And she's under time pressure to decide, because she doesn't have the boner control skills to calm it down. Can't cum in the wrong frame of mind while under a spell or it could stick.