A man and a very attractive woman were waiting at the hospital donation center. Man: "What are you doing here today?" Woman: "Oh, I'm here to donate some blood. They're going to give me 5 for it.

" Man: "Hmm, that's interesting. I'm here to donate sperm, myself. But they pay me 50." The woman had a momentary look of disgust. However they chatted some more before going their separate ways. Several months later, the same man and woman meet again in the donation center.

Man: "Oh, hi there! Here to donate blood again?" Woman: shaking her head with mouth closed "Unh unh."