As long as we're on wife jokes (I hope I didn't hear this one on APS):
A 70 year-old gentleman decides that it's time he had some fun, so he buys himself a Dodge Charger. He's screaming down the interstate at 90+ miles an hour when he sees the red lights flashing behind him, so he pulls over.
The trooper says, "look. It's 30 minutes before the end of my shift, and I've heard every excuse there is. If you give me an excuse I've never heard before, I'll let you go."
The old guy says, "well, my wife left me years ago for a state trooper. I thought you were trying to give her back."