In all the time you play as him he never ever has to go to the toilet? Why is that? Are Hylians magical creatures that have no toilet needs? Seeing the general discussion forum here make it seems they are missing out on a lot.
Maybe he has a bottle hiding in his boot that has a tube leading up so he can go no 1 whenever he needs to. I don't know about no 2. Maybe he just wears a diaper. Heroes don't have time to go to the toilet.