Sammy the Friendly Ghost

At the dinner table.  Pia was pretending to be a ghost and goes 'awoohh', 'Awwwoooohhhh', 'AWOOOOOHHHHH'. 

Sammy is silently observing.  He's never seen this before.

And then he jumps in :  'ahhhhhhhh', 'Ahhhhhhh', 'AAAAHHHHHHHHH!'

Soon the kitchen is filled with awoooooooooooohhhh and ahhhhhhhhhhhhhhh!  from this 10-month old boy.