Bathroom is ok, but restroom is the one that gets me, we all know what a lavatory/toilet is and why we go there and it isn't for a rest!. Ridiculous euphemism for those who can't get their heads around bodily functions.
It was a while ago when out with our own kids and the grown up grandchildren we cottoned on to the fact that they are all into the "can I get?" when ordering food, coffees whatever. I would love whoever is serving to say "I dunno?" or even "do you mean could I have" Still we are all of our time and such expressions are pretty universal amongst their age group and we are both used to being referred collectively to as "you guys" which really doesn't bother me at all.
I personally don't like the word "awesome" used in the wrong context which many waiters appear to use in the US when you order something. No! awesome is a blue whale, big cats, even dare I say it little cats, Michelangelo's "David", The Iguazu Falls, The Valley of the Kings, The Colosseum etc. etc. ....not an order for a flat white or cappuccino I also don't like "do the math" as used by a British person.......we say MATHS don't lose the S.
God forbid we adopt all the habits that float over the pond, the number of women that drive around with "I'm a hockey/football/whatever mom" sticker in their car.........what does it even? mean, you live your life vicariously though whatever activity your kid is into!
I still don't know what a "homecoming queen" is. Pretty sure it's nothing to do with The Queen returning to Windsor though.