Today, at the local supermarket, I'm behind a guy buying some groceries. His purchase includes a ton of baby food.

Cashier: [to him] Do you have a Shaw's card?
Guy: No.
Me: Here, he can use mine.
Guy: Thanks!
Me: Oh, no problem. This'll drive the FBI nuts. All of a sudden I start buying baby food?? They're gonna spend months trying to figure that one out...

That's when he stopped talking to me.