Embedded below, Penn and Teller take on the history of Profanity in an episode of Penn & Teller: Bullshit! (Embedded, at least until the video is taken off of Google Video)
Bullshit! (also known as Penn & Teller: Bullshit!) is an American, Emmy-nominated television series, running since 2003 on the premium cable channel Showtime. The series has achieved worldwide success, being shown in countries such as Australia, Brazil, Canada, Mexico, New Zealand, Sweden and the United Kingdom. The series is hosted by professional magicians/comedians Penn and Teller. Four seasons have aired, and it has been renewed for a fifth season, currently in production. The show reflects the atheist, libertarian stance of the duo, and inherits their characteristically blunt, aggressive presentation. (Source: Wikipedia: Bullshit!)
NSFW Video after the jump.