Profanity, also known as bad language, swearing, cursing, or cussing or vulgarity, is the usage of words which are considered to be offensive or abusive. Its use is taboo in polite or formal environments, and more commonly accepted in informal contexts. The word "profanity" comes from the word "profane", which means that which is not sacred.
Profane words tend to involve certain near-universal subjects: filth, particularly human waste; forbidden sexual practices; and blasphemous treatment of the sacred. However, it is the words themselves, and not the concepts they represent, which cause offense, as there are numerous words to signify any taboo subject, with varying levels of acceptability. Among profane words, there exist at least two levels of offensiveness. There are also, in many languages including English, euphemisms such as darn, drat, gosh, frap and so on.
Over time, the perceived offensiveness of some expressions has changed. Up to the twentieth century the most offensive terms were religious. Many exclamations we find completely inoffensive are euphemistic renditions of blasphemy. The twentieth century saw a shift to sexual terms as the most offensive. Recently racial terms have grown in their offensiveness (the "N" word was commonplace and acceptable until the mid-nineteenth century, it is now too offensive even for use in male-only settings) due to political correctness. 
Profanity in Religion
According to some interpretations, profanity is prohibited by God in the Ten Commandments. This can be extrapolated from Commandment 3 "Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain" since much profanity is in the form of "swearing" or "cursing". Satan manifests in Hollywood through its insidious profanity such as is seen on HBO.
Profanity in Buddhism
In Buddhist morality, the Five Precepts, which are required to receive as a formal oath or vow in order to be a Buddhist (unlike many liberals who call themselves Buddhists while ignoring morality), specifically forbid lewd or lascivious speech (profanity) in the Fourth Precept which also forbids lying, gossip or "divisive speech" and harsh speech.
- No Cussing Club
- HBO - known more than any other TV network for its extreme use of profanity, e.g Deadwood, with an average of 1.56 utterances of the "F" word per minute of footage.
- Hollywood values: HBO is most famous for its frequent profanity
- San Francisco values and Homosexual agenda
- Why Do We Love Profanity?, Brent Bozell, GOPUSA, January 30, 2009
- National Public Radio [NPR) review of the book God, No! Signs You May Already Be an Atheist and Other Magical Tales by Penn Jillette
- Swanson, Carl (April 12, 2004). Cussing and Fighting. New York Magazine. Retrieved on January 10, 2014.
- Kay, Jeff. The Number of F's In Deadwood. West Virginia Surf Report. Retrieved on May 25, 2007.