She really is not gaining that much weight or consuming enough calories by eating tinies of that size. A Shrunken person needs to match to size of your fist (clutched) in order to be proportional with a meal. So in other words he would have to be about cock size, 8 to 14 inches and fit down her throat like a penis. She would have to take it in deep throat style and then swallow. I don't know why anyone doesn't do that.