A pair of brothers.

During the 1950's, a pair of British brothers were riding across Europe in a sleeping compartment on a train.
One of the brothers was extremely hard of hearing, so when there was a knock on the door, the other brother answered. Standing there was a very proper gentleman, all dressed in white, including a bowler hat, shoes and spats.
"How may I help you?", inquired the brother.
"Well, it seems they have over-booked the compartments, and I was wondering if you might be good enough to share yours."
"WHAT?", said the hearing impaired brother.
"HE WANTS TO SHARE OUR COMPARTMENT!!"
"Oh, jolly good, jolly good." The conversation between them continued, and the brother said, "Might I ask what you do for a living?"
"Of course," replied the gentleman. "I've just retired from 25 years in Her Majesty's Service."
"WHAT?"
"HE'S JUST RETIRED FROM HER MAJESTY'S SERVICE!"
"Oh, jolly good, jolly good."
'How interesting! Where did you serve, if you don't mind my asking?"
The gentleman replied, "Most of the time, I was stationed in Calcutta, India."
"Really!", said the brother. "You didn't happen to know a Millicent Cholmondely-Smith, did you?"
The gentleman smiled and said, "Ah, Millicent! Best piece of ass and blow job I ever had!"
"WHAT?"
"HE SAYS HE KNOWS MOTHER!!"