She says, "But sir, it's just a sperm bank."
"I don't care, open it now!" He says.
So she opens the door to the vault and inside are all the sperm samples. The guy then says, "Take one of those samples and drink it."
She looks at him and cries, "But they are sperm samples???"
"DO IT!" He shouts.
So the nurse sucks it back.
"That one there, drink it as well."
Finally, after four samples, the man takes off his mask and says, "See honey-it's not so hard!"