Restroom is the most ridiculous.
It's not a place you go to rest !
He's not quite correct about the "get and have''...Get is very impolite when asking for something, gets everyone's back up, but the young generation are increasingly saying it ... however we usually say could I have..or May I have ....
he's correct about Got & Gotten... gotten raises most British people hackles...
While we're on the same subject.... we generally hate the American word Burglarized... here we say Burgled...
I say Vac'd on here with the majority of American members so people don't misunderstand.. but in common conversation with other Brits I would say ''I have hoovered''..
overall this guy is really good at having compared all the words correctly.. and he even does a very good Southern English accent....
I'm a little bit concerned tho'...that he thinks there's an N before the letter Z...lol