[test1235]

As a brit, I agree with that sentiment. It comes across as passive-aggressive way to tell someone you think what they just said is utter nonsense.

You heard them just fine, but you don't like what they said, so you exagerrate your reaction and pretend they're an idiot.

Of course, it depends on the tone of your voice as well, so everything comes across in the worst possible way when all you can see is the words :)

[pjc50]

Funny how this works. Normally on the internet people disagree with one another point-blank with no niceties, so a "polite" "excuse me?" stands out.

(Brit here as well)

[Argorak]

Speaking English as my third language and having learned the British flavour, I agree with that fully.