Croix has started using the phrase yes a do a lot lately. It makes me laugh. He wanted Easter eggs for breakfast, when I told him we don't have any he says yes a do. When he was begging for cookies yesterday and I told him he didn't need any he replies yes a do.
He also uses either a lot. He has the concept of the word down (somewhat) just not the correct use of it. I'll ask him to take his dishes to the sink and he will say I take them over either, meaning he doesn't want to take them over. He takes off his shorts and says I have pants either, with a little giggle.
It's fun to see his vocabulary grow. To watch his communication skills develop. Not to mention he says the funniest things! I love this little boy!