An elderly woman goes to the doctor and asks his help to revive her Husbands sex drive.

What about trying Viagra? asks the doctor.

Not a chance says Mrs. Murphy. He wont even take an aspirin for a headache.

No problem, replies the doctor. Drop it into his coffee,he wont even taste it. Try it and come back in a week to let me know how you got on.

A week later Mrs. Murphy returns to the doctor and he inquires as to how things went.

Oh it was terrible, just terrible doctor.

What happened? asks 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, at the same time ripping my clothes off and then proceeded to make wild passionate love to me on the tabletop. It was terrible!

What was terrible? said the doctor, Was the sex not good?

Oh no doctor, the sex was the best Ive had in 25 years… but Ill never be able to show my face in McDonalds again!