Originally Posted by
LondonElite
I was once asked by the immigration officer of my country "tell me why you are coming here and you long you plan to stay for" I asked him whether he had satisfactorily established my citizenship, and he said he had. I told him that his earlier question was an inappropriate abuse of his position and well outside his mandate. He stared at me for about five seconds and gave me back my passport, saying, "well, I cannot deny you entry into your own country, have a nice day." It was all very polite, but I did want to make a point that day.
I probably wouldn't do this coming into the UK (and clearly it was the UK mentioned here), partly because I'm not brave enough and partly because the process no longer involves human interaction. But the UK is a country where you could be reasonably confident that it wouldn't end too badly - there are strict limits on the powers of all government officials, whereas that doesn't seem to be the case in many other places.