"With `Cartman,' you know he's just a complete idiot and you should sort of do the opposite of everything he does," says one seventh-grader in New York. As for the bleepable expletives that fly out of all the characters' mouths, he added, "My daddy says them every single day."

* OK, I'm becoming convinced we didn't need those quotation marks around the characters' names after all. Now they're getting in the way. Here, they create a quote inside a quote, so you would use single quotation marks. Or you could take them out ... and go back and fix "Kenny" and "Cartman" in the earlier paragraphs.

* Yes, "seventh-grader" is hyphenated.

* Don't forget the apostrophe to indicate possessive after "characters."

* The direct quote at the end is a complete sentence, so I'd capitalize the first word.