" Don’t talk to your horse, dear. People are watching,” Pauline said quietly.
Halt turned a perplexed look toward her. “How do you know when I’m doing that?”
She smiled at him. “Your nose twitches.”
… On the way, Kane [stableboy] kept glancing surreptitiously at the famous Ranger, fascinated by the fact that he kept staring down his nose and tweaking its tip between his forefinger and thumb. "

― John Flanagan , The Royal Ranger: A New Beginning (The Royal Ranger, #1)