What is the origin of the idiom "son of a bitch" and when to use it?

The origin of the phrase "son of a bitch" can be traced back to the early 19th century. It is believed to have originated as a derogatory term used to insult or demean someone by criticizing their mother. The expression implies that the person being referred to is the offspring of a woman who is considered promiscuous or of low moral character. Over time, the expression has become a common expletive used to express anger, frustration, or annoyance. It is worth noting that the phrase contains strong language and is considered vulgar, so its usage should be carefully considered in different contexts.