stolen from lotsofjokes.com (http://www.lotsofjokes.com/dirty_jokes_1.asp):
John just graduated from clinical psychology and opens his first office. After some successful advertising he is astounded to have nearly 300 people wanting to be in group therapy. John decides to rent a big hall and invite the entire group. To break the ice, and to get the therapy started, John decides to ask a show of hands how often the attendees had sex. He first asks for a show of hands of all the people who had sex almost every night. A modest number of hands were raised. He then asks, how many had sex once a week? This time a larger number of hands were raised. John then asks how many had sex once or twice a month? Again a few hands were raised. After John polled his group several more times he noticed one guy sitting off to the side with this huge beaming grin on his face. John noticed that the guy never raised his hand, so he asked him how often he had sex. The guy said, "Once a year!" To John's dismay, he responds, "Why are you so happy getting sex only once a year?" The grinning guy responds, "Tonights the night!"
How are women and tornadoes alike?
They both moan like hell when they come, and take the house when they leave.
Three guys go to a ski lodge, and there aren't enough rooms, so they have to share a bed. In the middle of the night, the guy on the right wakes up and says, "I had this wild, vivid dream of getting a hand job!" The guy on the left wakes up, and unbelievably, he's had the same dream, too. Then the guy in the middle wakes up and says, "That's funny, I dreamed I was skiing!"
One day Mr. Smith, the president of a large corporation, called his vice-president, Dave, into his office and said, "We're making some cutbacks, so either Jack or Barbara will have to be laid off." Dave looked at Mr. Smith and said, "Barbara is my best worker, but Jack has a wife and three kids. I don't know whom to fire." The next morning Dave waited for his employees to arrive. Barbara was the first to come in, so Dave said, "Barbara, I've got a problem. You see, I've got to lay you or Jack off and I don't know what to do?" Barbara replied, "You'd better jack off. I've got a headache."