A guy in a

A guy in a mask bursts into a sperm bank with a shotgun.
"Open the fucking safe!" he yells at the woman behind the
counter.
"But we're not a real bank," she replies, "we don't have
any money, this is a sperm bank."
"Don't fucking argue, open the fucking safe or I'll blow
your head off!" says the guy with the gun. She obliges and
once she's opened the safe door the guy says, "Take out one
of the bottles and drink it."
"But it's full of sperm!' she replies nervously.
"Don't argue, just drink it' he says. She pries the cap
off and gulps it down."
"Take out another one and drink it, too!" he demands.
She takes out another and drinks it as well. Suddenly the
guy pulls off the mask and to the woman's amazement it's
her husband!
"There!" he says, "it's not that fucking difficult is
it?!"