Do you think the word "sexy" is a word that young children should get punished for using, as in "I'm Sexy and I Know It?"?

I have read (probably on Huff Post which gets fed to my AOL account automatically) at least twice in the past few months about kindergarten or early elementary school-age children getting suspended for singing the song “I’m Sexy and I Know It.” For those who don’t know this song, it’s a popular pop song that’s on a lot of radio stations this summer. I imagine it’s the word “sexy” that is what’s getting the kids in trouble.

My question for the collective is, is it wrong for a young child to use the word sexy? At what age is the word acceptable for a child to use?

I ask because my daughter, who is 5, and goes to preschool, will occasionally say, after hearing the song, “I’m sexy and I know it.” I’m not sure when and where she has said it, but I have heard her say it. Punishment from her pre-school is not something that we ever hear about, (luckily they are very cool, and as I said, I’m not sure if she even says it at school), but thinking about the recent headlines has made me think about it more, so I’m looking for opinions from the Collective.

Is “sexy” an ok word for a young child, and if not, at what age is that word ok for a child to use?