how old?

I just never know what is going to come out of Emi or Chase's mouth at any given time. I just never know what they are going to come up with. For instance, the other day Emi was singing something quietly to herself, and I asked her what song that was...thinking it was something from school. She surprised me when she launched into what I recognized as "When I Grow Up" by the Pussycat Dolls. First, I wondered where she had heard that song enough to even know any of the words. Then she got to the part "...when I grow up, I wanna see the world, drive nice cars, I wanna have boobies..." . At first I was a little dumbfounded, and then I couldn't help but laugh a little, which maybe isn't the correct response from a parent, but what do I know? I couldn't help it. I have heard that song a few times, and I was pretty sure that the word was supposed to be groupies. I told her that, (so she wouldn't go around singing that and proving to people what a super job we're doing as parents that our 8 year-old knows Pussycat Dolls songs) and then she wanted to know what a groupie was. At that point I was thinking that maybe 'boobies' wasn't so bad...after all, we all want 'em, right? Then when I went online to find the lyrics, and it seems there are a lot of other people who think that they say 'boobies' too. (Anyway, a groupie is now defined as a big fan...and that's all.) So, after I recovered a bit, I asked her where she'd heard the song. Some of her friends sang it at school and they would do performances of different songs at recess, kind of like American Idol, I guess. ugh. Like she's not growing up fast enough. I feel kind of overprotective in a way about some things at times, like what they hear on the radio. I will change the station if a song comes on that I don't think they need to hear (songs with swearing, other things they don't really understand or need to be hearing), but I can't edit everything and I sure can't be with her all the time. I haven't completely decided if it's a good thing that most of the things she repeats that she's heard she doesn't even understand. But they still sound pretty bad coming out of an 8 year-olds mouth.
I need the Parenting Guidebook more now that they are getting older then when they were babies.

Now last night she sounded like such a kid. I walked into her room, which is in it's typical disastrous state, and asked her how she could even walk in there with all the stuff all over her floor. She just looked at me with those big blue eyes and said, "My feet are littler than yours," and then smiled such an innocent smile. We had a good laugh together about that one, and I want to remember that silly little moment when she comes home singing the next Pussycat Dolls song....
Lord, please help me, I'm not sure I'm going to survive this parenting thing! We haven't even gotten to the teenage years yet. yikes.