It's a question that has puzzled me for years.
Is it because he eats all my shoes? No, that's not it.
Maybe it's because he's a master of the ancient art of ninjutsu? Nope, that's not it either.
I've tried everything, from training him to behave, to bribing him with treats, to building a force field around him. Nothing seems to work.
Perhaps it's because he's a bit of a weirdo?