John goes into a chemist, reaches into his pocket and takes out a
small bottle and a tea spoon. He pours some liquid onto the tea spoon
and offers it to the chemist's assistant. Could you taste this please?"
says John. Chemist Assistant takes the tea spoon, put it in his mouth
swills the liquid and swallow it. Does it taste sweet?" says John"No,
not at all" says Chemist Assistant. "Good" says John" The doctor told
me to come here and get my urine tested for sugar" The Chemist Assistant