An episode that was never aired, there were many fans that wanted to see this episode and this just got posted today. Unfortunately, the words are censored, but I still got one hell of a laugh from it.
Probably for the same reason Rude DeeDee and Dex have thick New York/Brooklyn/Bronx/Jersey accents, they thought it would fit. Though I do find it odd, given that, when Dex made Deedee smart in another episode, she got the exact same accent.
Wow, cartoon characters that curse, that's soooooo funny. (sarcasm)
It actually is kind of funny. Not that much though. Its amazing what they tried to get away with in kid shows back when most cartoons still had their balls. "Powerpuff Girls" was originally going to be called "Whoops Ass Girls" but that's sorta common knowledge.
On a side note, good Dexter and DeeDee reminded me of the Goofy Gophers.
In October 2012, Genndy Tartakovsky was asked about the episode during an AMA on Reddit, and he replied "Next time I do a public appearance I'll bring it with me!". Adult Swim later asked fans on Twitter if there was still any interest in the episode, and the response was "overwhelming".