An elderly couple went to their local surgery for a routine yearly check up on their health. The old guy was first in, examined and the Doc said, "You are fine Mr Smith, I can find nothing wrong with you" The old guy said "There is only one thing I can complain about Doc and that's when I make love to my wife....the first time I get so hot and sweaty it feels a little uncomfortable and the second time I get so very cold and clammy that it's hard to keep going"
The doctor was a little impressed that the old guy could actually do it twice and again echoed that he could find nothing wrong with him but to carry on as he was.
The guys wife came in to the Doc and was examined and the doc told her she was also very healthy but also said he wasa impressed at the virility of her husband but could not understand why he felt hot the first time they made love and cold and clammy the second. She said "The stupid old sod, what does he expect? The first time is in July and the second in December""