A short list of Sebastian's current phrases (the really cute ones):
I try again - this is one of my favorites. So cute.
I wait - generally for buses or trains
I found it!
My turn! - obviously daycare has taught him a very useful skill and phrase
Two hugs - he likes to hug both mama and daddy simultaneously, and always says "two hugs!" to prompt us into action
I boo mama - meaning, I scared mama.
turning - when we're watching the trains go away from us, turning the corner
Come on! or I'm coming! - again, usually in reference to buses or trains
tree hugs - that's right, he's already a tree hugger. Except he takes it very literally, and will hug any tree that takes his fancy.
tickling - he's really into tickling and being tickled. He even tries to tickle other people, like his friend Sonya, and Grandpa and Grandma.
books - He's started reading along with some of his books, including a Duck and Goose Opposites book - so he knows sad and happy, loud and quiet, near and far, clean and dirty
the Boynton dance book - he loves this book and asks for it by name, and insists on everyone dancing with him.
letters: Seb has learned his first letter. O! And he sometimes knows e, s, and b for bus
colors: for the longest time, everything was blue. But now he seems to know and be able to say most colors - red, green, black, purple, yellow (sometimes), orange.
numbers: So far everything more than one is two. Or if it's really a lot, five.