The newlyweds arrive at the hotel, and the girl tells her husband, "Honey, I know nothing of this.  Can you help me, please..??"

"I will honey.  Starting from this instant, we will call your thing the prison and my thing, we'll call the prisoner.  So, we will put the prisoner in the prison."

And they throw down the first one.

The guy is laying face up on the bed.  The girl was delighted and tells her husband, "Love, the prisoner is outside the prison..!!"

The guy, tired but very delighted tells her, "Let's put him into the prison another time..!!"

After the second time, the girl is very happy and she tells him, "Honey..!!  The prisoner is out again..!!"

The man rises, and they throw down the third.

He is on the bed, exhausted, and the girl says, "Honey, the prisoner escaped again..!!"

And he answers, "HEY..!! It's not life imprisonment..!!"