Stalin steps out on the balcony of the Kremlin one morning and sees the sun rise.
"Good morning, Comrade Sun" he says.
"Good morning, Comrade Stalin" the sun replies.
Later in the day, as Stalin is heading to the NKVD headquarters to meet with Beria, he says, "Good afternoon, Comrade Sun".
"Good afternoon, Comrade Stalin," the Sun replies.
As he goes for his evening jog on the Kremlin's grounds, he says, "Good evening, Comrade Sun"
"I said 'Good evening, Comrade Sun!'" Stalin says, his anger rising.
The Sun replies, "Screw you, I'm in the West now."