Originally Posted by
justhere
Put the baby in the diaper bag until you get past the document checker.
Originally Posted by
YoProWithAGoPro
I'd leave him in there until you are all the way through tsa. See if the person watching the scanner is actually paying attention.
Leave him in there the whole flight.
Seriously though, I doubt WN would require a birth certificate to verify the baby's age if the kid is obviously under two. It should be pretty obvious.