Hot and Cold Sex"
When I had my annual check up, the Doctor said all was ok, for my age. He asked if I had any questions... ?
" Yes, why is it that when I have sex, I'm always cold and shivering after the first time, but after the second time, I'm always hot and sweaty. ? "
The Doctor was mystified and phoned my Mrs...
" The silly old git !", she replied.

" Its because the first time is usually Christmas and the second time is for his birthday... In August.. ! "