Pictures:

What invention lets you look through a wall?

A window.

960

Why shouldn't you write with a broken pencil?

Because it's pointless.

971

Why couldn't the leopard play hide and seek?

Because he was always spotted.

990

When Bobby threw a ball as hard as he could, why did it just come back to him?

He threw it up in the air.

989

Why is it hard to organize a professional hide-and-seek tournament?

Good players are hard to find.

972