A woman and a man standing in an elevator…

The man asks: “Where are you going?”
“I’m going to donate my blood”
“How much do they pay for that” – asks the man
“About $30”
“Wow, all that blood for $30? I’m going to donate sperm now, and the sperm bank is giving me $100”. Frustrated, the woman leaves the elevator.
The next day they meets again, and the man says: “Nice to meet you again, where are you heading today?”. “Two teh spehm bahnk” – she replies with her mouth full