A man and a woman were on an elevator together in a business complex, and since it was a long ride, they began to exchange small talk. "I'm going downstairs to the blood bank," the woman said, "I can give every couple of months or so, and I get about twenty dollars each time. Helps pay the rent.

" "Really," the man said, "I'm going upstairs to the sperm bank. I can give two or three times a week, and I get around two hundred dollars each time." "Wow!" the woman mused.

Later that week they were together on the same elevator again, and the man asked, "Hey, are you going to the blood bank again so soon?" The woman shook her head and pointed at the ceiling. "mmmmmhhmmmm!"