Milton Wiltingdon adored his job. Sure, he let his classroom run a bit to the side of orderly some days - most days - but he thought his students learned, no one complained, they had passed their exams in most cases...
So when he looked at Headmaster Snape - who he'd never quite gotten the hang of - it took him a moment before he laughed, hand clapping on the desk. "Good one, Sir."