One day an old man goes into a pharmacy, reaches into his pocket and takes out a small bottle and a teaspoon laying them on the counter.
He then asked the pharmacist, “Could you taste this for me, please”.
Being a senior citizen, the pharmacist went along, taking the spoon with a tiny dab of the liquid, puts it in his mouth swills the liquid around and with a grimacing look spits it out in a cup.
“Now does that taste sweet to you.” says the old man?
The pharmacist said to the old man.“Hell no!” “Oh that's a relief”, said the old man, “The doctor told me to come here and get my urine tested for sugar”.