It's a lame joke, but I enjoyed this when it was sent to me last week:
A man is stopped by the police at midnight and asked where he’s going.
“I’m on the way to listen to a lecture about the effects of alcohol and drug abuse on the human body.”
The policeman asks, “Really? And who’s going to give a lecture at this time of night?”
“My wife,” comes the reply.
Cheers!