The term "ffs" is an acronym that stands for "for f***'s sake". It's commonly used in informal communication to express frustration, annoyance, or exasperation regarding a situation or a person's actions. It indicates that the speaker is at their wit's end about something that seems trivial or irritating.
The phrase originated in English, where the "f***" is a vulgar term for sexual intercourse, used here as an intensifier. The acronym "ffs" likely gained popularity with the rise of texting and online communication, where brevity is valued.