Here are some of Xavier's recent phrases:

Yeah, sure Mommy!
Mommy, to the wreck-you! [rescue] - accompanied by arm pumping gesture and giant grin
I miss Daddy! (at the end of a tantrum, with tears... he has learned well from his role model!)
Mommy! Where are you? Mommy! Where are you!
Oh man!
Hey! Mommy! Hey!
[Pointing] Hey! I got a idea
Hey! I got a kweh-chun [question]

He stood at the baby gate at the office door this morning and said, "Mommy, hold me!" When I told him I had to do some work, he said, "Oh man! I wanna hug." You better believe he got one after that ;-)