““By the by,” Stephen said, “what is the difference between a viscount and a stallion?” Miss Marshall shook her head. “What is it?” Stephen gave her a broad smile. “The first is a horse’s arse. The second is an entire horse.” She buried her head in her hands. “No. You cannot distract me with terrible jokes. You are supposed to be looking up facts. Shoo!” But Stephen didn’t stop. “What’s the difference between a marquess and a paperweight?” “I’m sure you’ll tell me.” “One of them can’t do anything unless a servant helps it along. The other one holds down papers.””