Denny's

A lady goes to the doctor and complains that her husband is losing interest in sex. The doctor gives her a pill, but warns her it is still experimental and tells her to slip it into his mashed potatoes at dinner. So, that night at dinner, she does just that.

About a week later, the lady is back to see the doctor. "Doc, the pill worked great! I put it in the potatoes like you said. Five minutes later he jumped up, raked all the food and dishes onto the floor, grabbed me, ripped all my clothes off and ravaged me right there on the table!"

The doctor says, "I'm sorry, we didn't realize the pill was quite that strong. The foundation will be glad to pay for any damages."

"Oh, not to worry," she says, "We aren't going back to Denny's again anyhow."