Aberforth had to work hard to keep his face impassive, even grouchy, and not laugh at the horror and indignation on Lockhart's face at his apparent misunderstanding. It was probably just as well that Lockhart knew the appropriate charms; Merlin knows the world really didn't need another Lockhart running around. One was bad enough. Two might just reduce the world's intelligence level a little too much.
"Good to hear," he said shortly, letting Lockhart draw his own conclusions about what he meant by that. He then decided it was probably time to get down to business. "Amulets, huh? What are you after?"