Flicker
Al usually preceeds me home from work (that's what we call it, even though I work from home; if I don't come down within about 10 minutes of Hannah leaving, Al will shout up the stairs, "honey, when are you coming home?"), so it's Al who gets the scoop from Hannah about what she and Austen did that day.
Tonight I happened to call it quits about 10 minutes early, after Al had gotten home but before Hannah had left, and as I came down the stairs, Al said to me, "honey, watch this!" Hannah turned to Austen and said, "where's your nose?" Austen very carefully slid his finger up from his chin to his nose, and when he reached his nostril, he slid his finger about a millimeter inside and gave it a triumphant little flick, ending with his finger pointing out. And then turned to me and grinned.