Or, if you are writing science fiction, you can say Gorram, or Frell, Frack, Tanj, Taxes, or even Noy Jitat! Those are shiny words. Lily, cobber?Jitatin kreld-eater! Pirates of Dark Water definitely had some of the best non-profanity ever to be uttered on kids TV. I'd say the best use of swearing by Hanna-Barbera characters, but I'm sure there is an episode of Harvey Birdman featuring Yogi dropping four-letter words like they're going out of fashion.
I'm a believer in using profanity rarely so that it doesn't lose its meaning. "Frankly my dear, I don't give a damn" largely works because, as a good southern gentleman, Rhett hasn't been swearing his way through the entire book/movie. I like that when I drop the f-bomb, people really know I'm pissed.