This is the story of the 3 little pigs building their houses.
The first little pig built his house out of sticks. He worked all day, and the next day as well. When he was finished he had sticks left over. So he took the sticks and threw them into the forest.
The second little pig built his house out of straw. He worked all day, and the next day, and for another day after that. When he was finished he had straw left over, so he threw the straw into the river.
The third little pig built his house out of bricks. He was a planner though, so he worked all day on blueprints. He planned exactly how many bricks he would need, down to the last brick. After buying all his materials, he worked all day building, and the next day, and for more than a week after that. When he was finished he sighed contentedly, looking at the solid house he had build. Then he noticed the impossible, he had a single brick left over! He checked his plan, and he checked his house, but found no errors. He checked his receipt from the store, but he could not figure out where the extra brick came from. Finally, in confused desperation, the pig
threw the brick up into the air!
I love that joke. Ever since I was a kid. It's definitely a bad joke, but it makes me laugh anyway.