Q: How many centres of gravity a body has?

A: Just the one.

Oh. I see.

When I said one, I assumed your head was attached to your body.

But it is not attached.

It's on the ground.

Your head. On the ground. Next to your body.

I guess that gives you two centers of gravity.

How do you do that?

It seems you have stopped talking.

And fallen over.

If you don't mind, I'm going to use your head like a soccer ball.

I've always wanted to do that.