He was definitely smug when he turned and walked right back to bed, dropping the pillow back in place and leaving the sheets on the armchair where his shirt was laying. "I am happy. Because I like winning." He knew this would grate on Illya's nerves, but, honestly, sometimes Napoleon didn't know how to leave well enough alone, especially after he won something.
Laying down, the smug smile on his face didn't leave, even as he closed his eyes to sleep.