iTunes has a neat feature where it provides an "Explicit" material label for items that contain obscenities or mature content. Often, there is also a "Clean" alternative that has been edited or sanitized for more sensitive consumers.
For example, below is a great song "I hate Everyone," that you can purchase chalk-full of the F-word -- or, if you prefer, you can buy the version that uses more friendly terms like "ticked" and "jerk."
In short, the entire purpose of the "Clean" label is to denote material that has been cleaned up from it's former filthy self. Items that were clean to begin with don't have this label, like this podcast with children's stories. Below I have used a super-fancy red oval to highlight the lack of either "Clean" or "Explicit" labels.
Today I was poking around on iTunes to see if I could find any cool podcasts for Max when I found a Sesame Street podcast. How odd that the Sesame Street podcast comes with the "Clean Label" . . .
My imagination has been running a wild with what has been edited out to make this fit for children. If not "COOKIE," for what, exactly, did the letter "C" stand?