An elderly woman goes to the doctor and asks him to help revive her husband's sex drive. "How about trying Viagra?" suggests the doctor. "Not a chance," she replies. "He won't even take an aspirin for a headache." "No problem," replies the doctor. "Drop it into his coffee and he won't even taste it. Try it and come back in a week to let me know how things have worked out."
A week later, the elderly woman returned to the doctor. "Well, how did things go?" he asked. "Oh, it was terrible, just terrible, doctor." "Really? What happened?" he asked. "Well, I did as you suggested and slipped it in his coffee. The effect was immediate. He jumped straight up and swept the cutlery off the table. Then, he ripped my clothes off and made passionate love to me on the tabletop. It was terrible."
"What was terrible?" asked the doctor. "Was the sex not so 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 at Burger King again."