A trap awaits Western media consumers who assume profanity translates symmetrically across borders. In modern American and British English, "bitch" has undergone decades of linguistic reappropriation. Pop stars routinely scream it as an empowerment anthem. Friends greet each other with "Hey bitch!" in group chats. It operates as a verb meaning to complain, or an adjective describing something difficult.
None of that flexibility exists for ssangnyeon or gaenyeon. In South Korea, these words carry zero affectionate counterweights. You cannot casually hug a coworker on Friday evening and say ssangnyeon. You cannot use it to describe a difficult calculus exam. The term acts exclusively as a verbal assault weapon. While intimate female friends in Seoul in their late teens or twenties might occasionally drop an ironic ya michin-nyeon-ah (야 미친년아) during intense, private laughing fits, this practice remains narrow. The social margin for error is razor-thin. Misreading intimacy levels turns a would-be joke into a relationship-ending insult within seconds.