Some very useful advice

Mom: Well, dad drove. I'm still not driving. Sometimes I get a sudden pain in my knee. Dad handles it well, you know. I would have told me to go to hell by now, but he just ignores me.
A.: You haven't told mom to go to hell?
Dad: You know, in thirty-plus years, she's given me lots of practice: training for the psyche, if you will.
Mom: Please.
Dad: Imagine someone sitting next to you while you're driving and providing a running commentary, the whole time.
A.: Oh, I know. I've driven with mom.
Mom: You have? When?
A.: Most recently when you visited a couple of years ago.
Dad: What you should do is, when you're driving, call her. She'll provide some very useful advice.
Mom: Very funny.