There's a SpongeBob SquarePants episode that covers this. "Sailor Mouth". Highly recommended. The swear words are bleeped out with dolphin chirping and other maritime sound effects.
Patrick: Hmm... [dolphin chirp]! Oh, hey! I think I know what that means. That's one of those sentence enhancers.
SpongeBob: Sentence enhancers?
Patrick: You use them when you want to talk fancy. You just sprinkle it over anything you say, and Wham-o! You've got yourself a spicy sentence sandwich!
http://spongebob.wikia.com/wiki/Sailor_Mouth_(transcript)