LOL! These are from a Doctor Jokes site.
A lady went to the doctor and complained that her husband was losing interest in sex. The doctor gave her a pill, but warned her that it is still experimental. He tells her to slip it in her husband's mashed potatoes at dinner, and so she does just that.
About a week later, she returned back to the doctor's office and said, "That pill worked great. I put it in my husband's mashed potatoes just like you said. It wasn't five minutes later, and he jumped up, raked all the food and dishes on the floor, grabbed me, ripped all my clothes off and ravaged me right there on the table!"
The doctor said, "I'm sorry, we didn't realize that the pill was that strong. The foundation will be glad to pay for any damages."
The lady replied, "Naah. That's okay. We aren't going back to Denny's anyway."