Three Russians in a Moscow hotel

 Three Russians are staying in a Moscow hotel. Two of them are staying up late shit-talking the Party, but the third one wants to go to sleep.

So, he goes down to the lobby and orders tea to be brought up to his room in ten minutes. Five minutes later, he goes back to his room, leans over to the lamp, and says "Comrade Major, send some tea to my room in five minutes."

A maid brings him the tea five minutes later, and the other two men are shaken by this. They soon quiet down and go to bed.

When the third man awakes, he finds his friends missing. He goes down to the lobby and asks where they went.

"The KGB came and took them last night."

"But why did they leave me?"

"The Major liked your joke with the lamp."