"What Are Friends For" joke

These two police officers were traveling through the upper mid-west one February when it started to snow. The wind was blowing and it was very cold.
One of the cops spotted a light on the hill next to the road and said, "That looks like a farm up there, lets go up and see if we can get out of this blizzard."
The other one agrees and up the hill they go. When they get to the farm they find a real nice lady, explain to her that they are law enforcement officers, and they ask if they can stay in the barn until the storm blows over.
The lady explains that she is a widow with this nice comfortable 3 bedroom house and it won't be necessary to stay in the barn since they are police officers, as there is plenty of room in the house. So the two cops settle in and the widow cooks up a nice dinner and after watching some television everyone turns in.
The next morning they find the roads are clear and after a nice big breakfast the two officers thank the widow for her hospitality and depart.
About six months later one of the officers receives a registered letter from a law firm in the state where they met the widow.
He calls his buddy and asks, "Do you remember the night we stayed with that lady during the big blizzard?"
"Sure," his buddy replied. "Why?"
"Did you sneak into her room, make love and give her my name as yours?"
"Well yes," his friend said, "but you are single and sleeping around and I'm married, so I didn't think you would mind."
"Naw, thats fine," his buddy replied. "Just wanted you to know she died and left me her farm, the house, and her bank account. Thanks now I can quit the force!"