How Swearing Works

We all know what “bad words” are. Unlike most other language rules, we learn about swearwords and how to use them without any real study or classroom instruction. Even very young children know which words are naughty, although they don’t always know exactly what those words mean.

But swearwords aren’t quite as simple as they seem. They’re paradoxical — saying them is taboo in nearly every culture, but instead of avoiding them as with other taboos, people use them. Most associate swearing with being angry or frustrated, but people swear for a number of reasons and in a variety of situations. Swearing also serves multiple purposes in social interactions. Not only that, your brain treats swear words differently than it treats other words.

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http://people.howstuffworks.com/swearing.htm/printable

I just love the URL.