Are you threatening me, sir?" he said, so loudly that passersby actually turned...

Are you threatening me, sir?" he said, so loudly that passersby actually turned to stare.
"Yes, I am," said Mad-Eye, who seemed rather pleased that Uncle Vernon had grasped this fact so quickly.
"And do I look like the kind of man who can be intimidated?" barked Uncle Vernon.
"Well..." said Moody, pushing back his bowler hat to reveal his sinisterly revolving magical eye. Uncle Vernon leapt backward in horror and collided painfully with a luggage trolley. "Yes, I'd have to say you do, Dursley.