Tourette's syndrome is a condition that causes a person to make involuntary sounds and movements called tics. It usually starts during childhood, but the tics and other symptoms usually improve after several years and sometimes go away completely. There's no cure for Tourette's syndrome but treatment can help manage symptoms.
Here in the UK habitual use of profanities has been given the name Tourettes, the involuntary sounds and movements have been replaced by swearing. Apparently, "victims" are unaware of their condition. No comment.
The occasional cuss can be a tension reliever, our doctor, a lady through and through, was working with my wife. The doctor was on the call out system, my wife had made her a hot drink and the doctor spilt some onto her dress. "FFS," the doctor said, "I'm going out after I have finished my shift, now I shall have to go home and change." The doctor and my wife are good friends, the doctor knew my wife well enough to give vent to her annoyance without my wife disapproving. As my wife said, "when you have cleaned up the puke in the ambulance of yet another drunk, sometimes it takes the patience of Job not to swear. (Job, as in the bible, pronounced Jobe.)
It was a catholic priest, of all people that told me of the origin of the "F" word. Back in the days when adultery was forbidden by law, those caught committing this heinous crime were said to be: "Found Under Carnal Knowledge." Whether that's contrived or not I don't know, but it is plausible in that the adulterers were all incarcerated together and known as F***ers.