Finding the phrase's meaning in Google, I entered into this website(Lateral Thinking Puzzles) and there are some interesting questions with which students can demonstrate their own creativity.
Here are some examples.
Acting on an anonymous phone call, the police raid a house to arrest a suspected murderer. They don't know what he looks like but they know his name is John and that he is inside the house. The police bust in on a carpenter, a lorry driver, a mechanic and a fireman all playing poker. Without hesitation or communication of any kind, they immediately arrest the fireman. How do they know they've got their man?