If you go to the UK and tell a Brit that you’ve been watching the boob tube (U.S. television) it would raise a completely wrong image. In the UK, boob tube is a slang term for a tank top or knitted sleeve top. Oops!
Telling a Brit that your daughter just got braces on her teeth, may classify you as a wazzack. Braces mean suspenders in the UK and are used for keeping your pants up. They’ll wonder why your daughter has suspenders on her teeth.