When discussing a young boy the Peanuts know, Two wanted to clarify who he was talking about, he said, "You know, Tommy Smith, who lives in my backyard?"
Five is developing a rudimentary vocabulary. Well, sounds that are starting to resemble words. Among them are:
'kay (when you ask him to do something, he says "'kay")
wa you doon? (He goes up to you, and asks what you're up to)
lello (yellow, obviously)
night night; bye bye; hi; low
eye; mou; bow (for eyebrow)
help! Oh! help!
Most of the time, it still sounds like "mng gnk gnk" but he says it with all the love in his heart.