big words

I'm constantly amazed at the vocabulary that comes out of my four year old. Here are two examples from today:

"Okay Mommy, but that really disturbs me."

"That dinosaur has a fancy crest. It helps keep predators away."

After he made the disturbs comment, I said "wow, that's a really big word". His reply to me... "well Mommy, I'm a really big boy".