Ankles

No alcohol, drugs or anything induced this conversation . . .
Me: Do you know why we have ankles?
Austin: I think it's so we can run and stuff.
Me: That's what feet are for.
Austin, long, involved explanation about bones and muscles and how they're all attached and work together.
Me: But your ankles stick out. It's just kind of weird.
Austin: Your nose sticks out. That's kind of weird. What's your nose for?
Me: Smelling.
Austin: No, the holes are for smelling. The thing on top just sticks out. You don't need that part. We could just have slits. Those would be as good.
Me: I've said that about a million times.
Austin: No you haven't. You've said that about twice. Who have you said that to a million times?