I thought I'd lie on the floor and writhe in pain for a while," he grunted, "It relaxes me." "It does? Oh - you're being sarcastic. That's a good sign probably.
Cassandra Clare (2012). “Cassandra Clare: The Mortal Instruments Series (5 books): City of Bones; City of Ashes; City of Glass; City of Fallen Angels, City of Lost Souls”, p.753, Simon and Schuster