Boxing Day + Maggie's first word

I hope everyone had a fantastic Boxing Day.

I'm always surprised that America hasn't caught on more to Boxing Day. Here's why.
1. It involves leftovers. America thrives on having the freedom to box up what they don't finish so they can finish it later.
2. You get to eat more.
3. More time to spend with friends in a food coma.

To be honest, it sounds a little bit like Wings Dudes Sports Day.

Any who... if you find yourself watching the Simpson's movie, stay for the credits. More importantly, stay for the part where the Simpsons are facing the screen. Maggie has her first word. And this word is the most marvellous, fantastic, beautiful word of all words that could be articulately rolled off of a tongue and into the ears of a most attentive listener. It is a word that has been known to inspire artists, strike composers with that "final note," and cheer on Montezuma's legions to a towering and dominating victory over the Tabby Cats of BYU. What is this word?

Sequel 252E