A guy in a mask bursts into a sperm bank brandishing a shotgun.
"Open the fucking 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 fucking safe or I'll blow your head off!"
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 that one, too," he demands.
She takes out another and drinks it as well.
Suddenly the guy pulls off the mask, and to the girl's amazement, it's her husband.
"Not that fucking difficult, is it?"