Bez kota mysham razdol'ye (Without a cat, mice feel free)
Napoleon had to take a second look at his partner, who sat happily, feet propped on his desk, tie missing and top shirt buttons unfastened.
"Did no one tell me about Casual... Tuesday?" he asked mildly.
Illya didn't answer, merely pointed to the calendar with a pen that he appeared to be using to complete the New York Times crossword.
20th April - Mrs Waverly's birthday, and for once they were not out on assignment. Napoleon loosened his own tie, garnering a grin from Kuryakin.
"Without a cat," Napoleon quoted the Russian saying, earning another smile, "the mice feel free."