A masked man walked into a sperm bank, pulled out a gun, and told the secretary that this was a stick up and to open the safe.
The secretary replied, "You idiot, this is a sperm bank, there's no money here!!"
The masked man insisted that if she did not open the safe he would shoot her on the spot. Reluctantly, she opened the safe and stood back. There in the open safe were two vials of sperm.
The robber pointed his gun at the two vials and ordered the secretary to drink them both or he would blow her head off.
When she had finished drinking the second vial the robber took off his mask. There stood her husband with a grin on his face!!
"See Doris", he said. "that didn't kill you, did it?!"