Thanks everyone for your nice comments!

Billy actually flips his ear like that. He just likes it that way. He will walk around with it like that, I will flip it back "the right way" and he just gives me a confused look, takes his paw and flips it back.

It is so funny. Once in a while he will even flip them both, but he really just likes that right ear being flipped inside out. I have just started to leave it that way. If he wants to look silly, I will let him.