Bullshit

Bullshit (also bullcrap) is a common English expletive which may be shortened to the euphemism bull or the initialism BS. In British English, "bollocks" is a comparable expletive, although bullshit is commonly used in British English. It is a slang profanity term meaning "nonsense", especially in a rebuking response to communication or actions viewed as deceiving, misleading, disingenuous or false. As with many expletives, the term can be used as an interjection or as many other parts of speech, and can carry a wide variety of meanings.