The weather is so hot, can someone provide some "cold jokes" to cool down?

There are two fleas. One day, they found a cave full of black grass. So one kept watch and the other went into the hole to check. After a while, another one came out and said angrily, did I ask you to watch outside and tell me what happened? The other said that I was knocked unconscious by a sledgehammer as soon as I found out the situation. What are you wronged? As soon as I went in, a big snake and a snakehead came in. ......