Only two backbones and thousands of ribs.

I look at you; you look at me, I raise my right, you raise your left. What is this object?

They come at night without being called and are lost in the day without being stolen.

Take one out and scratch my head, I am now black but once was red.

What goes around the world and stays in a corner?

What can you catch but not throw?

Light as a feather, there is nothing in it; the strongest man can’t hold it for much more than a minute.

It has no top or bottom but it can hold flesh, bones, and blood all at the same time. What is this object?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

What kind of room has no windows or doors?

The more there is, the less you see.

What goes up and down stairs without moving?

Remove the outside, cook the inside, eat the outside, throw away the inside.