I like those little hummers, too. I haven't checked to see what note they are humming. I also like the "hehehehee" kids.
I'm using all 5 game slots in the game I bought. I don't know why, but I had to go get a free game trial from somewhere and start another game (I guess 5 is not enuf for me). In the trial game, there's a kid that says, "ing" or something like that. I've never heard that one in any of my original 5 games.
In my current #1 game, there are about 8 kids at the moment, and they ALL say "ew". My #5 game had the girl that said, "hey" - she grew up, and now I have 2 more kids that say hey, too. But I've never heard the hey voice on any of my #1-4 games (yet).
Sorry for the ramble. I don't know why this is so interesting to me.
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Hey!