Season 4, Episode 11: "The Contest"

I was alone....

-She caught you? -Where?

I stopped by the house to drop the car off...

...and I went inside for a few minutes.

Nobody was there. They're supposed to be working.

My mother had a Glamour magazine. I started leafing through it.

-So one thing led to another. -What did she do?

First she screams, "George, what are you doing? My God!"