[...] you’ll occasionally hear complaints that if we’re not careful, we might overuse profanity and wear it out, forcing us then to come up with new swear words or – worse yet – do without swearing entirely. Consider the streams of speech on any given day: face-to-face conversation, tweets, notes to self, telephone chat, email. Timothy Jay, a professor of psychology at the Massachusetts College of Liberal Arts and renowned expert on cursing, estimates from decades of research that profanity amounts to roughly 0.5 percent of the average speaker’s daily verbal output. Even though it’s familiar, it can take us by surprise, so we tend to overestimate its role in speech. Besides frequency, we are sometimes profane in unusual forms – like the infixed abso-f–king-lutely or guaran-f–king-tee – or employ profanity in attention-getting ways: F–k me!