You have this disconcerting habit of reveling in other people's pain.

And the headmaster had a disconcerting habit of offering jobs to people he met at dinner parties.

And there was a disconcerting habit from medical school: She sometimes fainted.

But there was that disconcerting habit of mind reading and other elusive differences.

He had a disconcerting habit of seeing through her and laughing rudely.

He had a disconcerting habit of unblocking his ears that way.

He had a disconcerting habit of doing that when her back was turned.

He had a disconcerting habit of sitting still for ages then making a sudden, jerky movement.

"He has a disconcerting habit of throwing food and silverware."

He had a disconcerting habit of saying something peculiar with a straight face.