Sperm Bank

A man walked into a private hospital wearing mask and holding a gun. He took up a nurse and urged her to open the sperm bank vault. She complained, "But, it is a sperm bank!"

"I don't care, open it now!!!" The man screamed with all seriousness.

She opened the door to the vault and inside are all the sperm samples. The man said, "Take one of those sperm samples and drink it!"

She looked at him, "But they are sperm samples".

"Do it!" He screamed.

So the nurse drank it. "That one there, drink that one too." The man said.

The nurse drank it too.

Finally, after she had gulped down four samples down her throat the man removed his mask from his face and said, "My dear wife, you see, it is not hard to do.''