Oh there's all kinds of goofy stuff you can get into if you think too hard about the practical reality of some of this stuff. Which I generally don't because it ruins the fun, but it is funny to consider sometimes. Like how he's somehow getting all this out of his fur each time. But this is fantasy: everyone is always horny, full of energy, perfectly in shape (or perfectly OUT of shape in just the right way), and holes are always clean, stretched and ready to go,