An 86 year old man goes to the doctor. 'You must help me', he pleads.
'Whenever I make love to my wife, my eyes go bleary, my legs tremble, and
I can hardly catch my breath.' 'Don't worry. Sensations like this tend to
happen to men of your advanced years,' the doctor explains. 'Tell me, when
did you first notice these symptoms?' 'Well'.....the old man replies. 'Three times last night, twice this morning and once in the taxi on the way here.'