Is "13: The Musical" appropriate for a 9 year old?

So I was planning on taking my little cousin who is 9 years old to see 13: The Musical. However, my mother thinks that the subject matter might be a little too "mature" for him. I completely disagree (considering my mother took me to see A Chorus Line and Miss Saigon when I was eight years old!!)

I personally think my little cousin would be able to handle the show, but she disagrees.

For those people who have seen the show, what are your thoughts/suggestions? What are the major themes of the show and would they be relevant for a 9-year old?

It's typical middle school life, most inappropriate part is a boy and girl making out. Worst word: Crap.

I think it's fine for a 9 year old.

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It is fine to take a 9 year old to if you want them to start calling every kid they don't like a fag-mo and to teach them that is is ok to not just make fun of the handicapped but to get them to use their disabillity to get you into R rated movies.

(and there is some bad language besides crap).

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They say the word penis...

Yeah, it should be fine. They do say ass, penis, and crap, but I'm sure (s)he has heard worse.

I'm 27 and I found the show to be immensely offensive.

I wouldn't take any human being of any age to this show.

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