Due to your post Morgi, I’ve spent some time researching American phrases,( ok I googled it) apparently Americans should use the following phrases and how to use them, in order to blend in with us Brits,
Conk , a blow to the head, nurse this chap has conked himself
Eating irons, this term is often used in restaurants or in a friends home, these eating irons aren’t clean, good luck with that one.
Ivories, a common phrase especially of use in a Dentists
Spawny, to tell a Brit how lucky he is
And my very favourite
Jock, a common greeting to be used when in Scotland!
I’d like to be there when an American greets a Glaswegian with that one.
It’s surprising though, the number of common phrases that we now use that came from the USA.