Two guards spot a man skulking around The Commie 13 headquarters.
"Stop! Who goes there? Documents!" He shouts.
The frightened person chaotically rummages through his pockets and drops a paper. The guard picks it up and reads it.
"Urine Analysis...
“Hmm... a foreigner, sounds like," says the other guard.
Then the first guard reads further: "'Proteins: none, Sugars: none, Fats: none...”
“You are free to go, proletarian comrade,” says the second guard.