If you're just casually venting about something on social media or to a friend in a text and don't necessarily care about holding some type of reputation, you're probably fine to use FUBAR.
Ọ bụrụ na ị na-ekwu okwu n'ezoghị ọnụ banyere ihe na mgbasa ozi mmadụ ma ọ bụ na enyi gị na ederede ma ghara ilekọta ịbịara ụdị aha ọma, ọ ga-abụ na ị dị mma iji FUBAR.