The Nose knows.
Jonathan has appointed himself the Nose Police. Up at the cottage, when AnPa would blow his nose, Jonathan would come running from two rooms away to point at him and say "Nose!" We even trained him to go get a tissue for Mommy or Grandma. It is difficult to blow your nose with dignity when his little face is peering up at you, anxiously awaiting any sounds that might emerge, so he can announce them to the room at large.
On the second leg of our flight home, we shared the two seats together while a middle-aged man had the single seat across the aisle from us. It was a short flight but a miserable one - there was no air conditioning and Jonathan was quite fussy. There was a lot of turbulence and the seatbelt light stayed lit the whole flight. We were desperate to find something to hold his attention. He pointed out the "boats" (life rafts) on the emergency exit card, and dropped the cap of the miniature bottle of water we were given, forcing us to drink it all in one gulp to avoid spillage. Once those delights were exhausted, however, he went back to wailing. All of a sudden, though, he stopped and said "Nose! Nose! NOSE!" really loudly. He lunged forward out of my arms and wound up cantilevered over the aisle, pointing at the man across from us, who had been enjoying a quiet pick.