"It's a Chicken! Bock Bock!"
Well, technically son.....I...umm...yeah, that's about right.
"Daddy, it's 'Ho Ho' (Santa)!"
(obviously no one in our family has a beard)
"Bye bye ducks!" (waving at the sky)
(sigh...he's probably right)
and finally, the one I asked him to repeat when he saw this month's Field and Stream on the ottoman....
"It's a Ghost, Daddy."