What would a muffler be but the thing on the exhaust system of a car?My parents have some great stories of confusion because of the differences in vocab, like the weird looks when asking if anyone has seen a muffler or asking someone for a torch.
here's a fascinating article from the BBC
http://www.bbc.co.uk/news/14130942
From that:
...As an ex-American resident, I remain a big fan of baseball. But I sit over here and listen to people who know nothing of the games talk about ideas coming out of "left field". They speak about "three strikes and you're out" or "stepping up to the plate" without the foggiest idea what these phrases mean. I think the country has started to lose its own sense of itself...
That is SCARY!

Questions for the Brits here:
1) How common is it to use "Aye" in place of "Yes" and who does?
2) I drive over to my friend's house. US: I'm visiting him. UK: I'm calling (on) him?
3) I dial his number on my phone. US: I've called him. UK: ??