It's likely that taboo words are stored in the right hemisphere of the brain. Massive left hemisphere strokes or the entire surgical removal of the left hemisphere can leave people with no articulate speech other than the ability to swear, spout cliches and song lyrics.

My politics were pretty anarchistic until 1969 when the Montreal police went on strike. Within hours, mayhem and rioting broke out and the Mounties had to be called in to restore order. It instilled in me that one's convictions can be subjected to empirical test.

You wouldn't believe the kind of hate mail I get about my work on irregular verbs.

Steven Pinker Quotes