A woman went to the doctor and asked his help to revive her man's sex drive.
"What about trying Viagara?" asks the doctor. "Not a chance" she said, "he won't even take an aspirin for a headache."
"No problem" replied the doctor, "drop it into his coffee, he won't even taste it. Try it and come back in a week to let me know how things went."

A week later she returned to the doctor and the doctor inquired as to how things went.
"Oh it was horrible, just terrible, doctor."
"What happened?" asked the doctor.
"Well, I did as you advised and slipped it in his coffee. The effect was immediate. He jumped straight up, swept the cutlery off the table, ripped my knickers off and slipped me a length over the table. It was terrible."
"What's the problem?" asked the doctor. "Was the sex not good?"
"Oh no doctor, the sex was the best I've had in 25 years, but I'll never be able to show my face in MacDonalds again."