A man and a 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 $25."
The woman looked thoughtful for a moment and they chatted some more
before going their separate ways. A couple 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."
