The teacher was explaining to her pupils the importance of responsibility and was looking to assign a team to do an important job for the class. She told them: "In this job we need someone who is responsible."
Little Johnny jumped up and shouted: "I'm the one you want teach'. On my last job, every time anything went wrong, they said I was responsible."
Here's a math question. If you get into bed 9 hours before you have to wake up, and your wife wants to have 2 hours of sex, how much sleep will you get?
Answer: 8 hours, 57 minutes - who cares what she wants!