A guy in a mask bursts into a sperm bank with a shotgun. "Open the goddamn safe" he yells at the girl 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 argue, open the goddamn 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 takes 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 his mask and to the girl's amazement it's her husband.
"There", he says, "its not that fucking difficult is it!?!"