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!
A drunk calls the police, and says, "They stole my dashboard, they stole my steering wheel, they stole my brake pedal, they even stole my gas pedal..."
Then, before the cops can ask where he is, he says, "Hey, never mind, I'm in the back seat."
The 10th grade biology teacher asked Jessica: "What part of the human body increases to 10 times it's normal size when excited?" Jessica responded: "I'm too embarrassed to answer!"
So the teacher asked Little Johnny who quickly said: "That's easy...the pupil of the eye." "That's correct, Johnny. Very good!"
And then turning back to Jessica, the teacher said: "I have three things to say to you, young lady... first, you didn't do your homework; second, you have a dirty mind; and third, you're in for a big disappointment!"