An elderly couple, fresh off their 50th wedding anniversary, were sitting peacefully on the porch—each rocking in their chairs and reading.
Out of nowhere, the wife reaches over and smacks her husband across the head, then calmly returns to her knitting.
Stunned, the husband asks, “What was that for?”
She replies, “That’s for 50 years of less-than-stellar romance.”
He shrugs and goes back to his newspaper. A few minutes later, he puts it down, looks at her—and gives her a gentle whack on the head.
Now she’s the one shocked. “What was that for?” she asks.
Without even looking up, he says, “That’s for knowing the difference.”