If you're texting Magnus to say 'I think u r kewl,' I'm going to kill you." "Who's Magnus?" Max inquired. "He's a warlock," said Alec. "A sexy, sexy warlock," Isabelle told Max, ignoring Alec's look of total fury. "But warlocks are bad," protested Max, looking baffled. "Exactly," said Isabelle.
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.764, Simon and Schuster