Because Buddy has found a new game. It's called "blow."
This is the game where either Mommy or Daddy hold a Kleenex to his nose, and says "blow!"
He scrunches up his face, bend his knees, and blows with all his little might... through his mouth.
I think we're missing the point.
This has become such a fun game, that he will ask "blow? blow?" when he wants to 'play'.
Or, when I was making dinner yesterday, I turned around to find that he was systematically bringing me every Kleenex in the house, so that we could play. Not every box, mind you. Every Kleenex. Individually.