Laundry
Emma, Olivia and Wilma were neighbours in a small town in Sweden. They would often gossip while hanging their laundry out in the backyard.
When it rained, however, the laundry would always get wet - all the washed clothes, except for Wilma's. Emma and Olivia would be amazed by the fact that Wilma never had her laundry out on the days it rained.
One day, when they were all out in the backyard putting their washed clothes on the line, Emma asked Wilma, “How is it when it rains, your clothes are never out?"
"I'll tell you a secret," said Wilma, "when I wake up in the morning, I look over at Sven. If his dingaling is hanging over his right leg, I know it will be a warm day, and I can hang out the clothes. If his dingaling is hanging over his left leg, I know it's going to rain, so I don't hang out the laundry."
"What if he is erect?" asked Olivia.
"Darling," said Wilma, "Who wants to do laundry on a day like that?"