A Rain Joke
On Shemini Atzeret the cantor prayed the "Geshem (rain)" prayer, and by the time he finished it, rain started pouring down. After the services the cantor walked over to the synagogue warden and told him:
You may be proud of me: I was answered from heaven and I brought rain onto the land.
The warden responded:
What is so special about this? This had also occurred previously when people like you managed to bring about a flood over the world...