From Tim Micucci
A man was driving with his wife at his side and his mother-in-law in the back seat. The two women wouldn't let him alone. His mother-in-law would say, "Turn left!"
His wife would then shout, "No! Go right!" and then "You're driving much too fast!"
"No, no," the mother-in-law would counter, "Go faster. I'm having my hair done in 30 minutes."
After 20 minutes of mixed orders, the husband finally stopped the car in the middle of traffic and asked his wife, "Who's driving this car, you or your mother?"