I'll admit it I actually do have Tourette Syndrome, no joke. But nothing like what those guys have
All I have now is a few small twitches in one of the fingers in my left hand. When I was a kid I had it a lot worse, I had a eye twitch that I would do until it started bleeding. I have never had any verbal ticks though. For most people as you get older it goes away somewhat and you learn how to control it. I don't have to take medication or do anything special. If you knew me now you would never know I had it unless I told you. Very very few people have it severe enough that they randomly cuss. I'd say probably less then a few hundred on the entire planet.
I have seen people that have OCD so bad they will do something until it becomes harmful to them. Like wash there hands until they rub all of the skin off
Though I did lie and use my tourette syndrome in grade school to call the principle and a few teachers names and get away with it
BTW those videos make me laugh also