Yikes. Although got to admit it is kind of funny for the first bit.
Skimming Tourettes online, most people dont do the verbal shouting thing, but it does seem that when they do it's foul language. Then googling it some more, some post said it might have to do with an issue controlling anger and the brain isnt wired properly to control it so the guy has no choice but to yell out someone vulgar.
I guess that makes sense at first, but I still dont see the link why someone like the guy in the video would be swearing at random people or at his own mom calling her a slut or saying overly sexual things to female classmates. If there's something pissing you off in life, youd think the trigger would be shouting at the cause, not at any random person walking around. And it doesn't seem like his mom or classmates would be the cause. So it's something else IMO. For example near the end it looks like he's buying a bus or train ticket and he's cursing at the ticket counter. I dont see how the man working the booth would be a trigger.