HAHA, I know what you mean. I'm a fairly cheery happy person. Going on eurostar for example, I stop at the UK checkpoint leaving, cheery hello, cheers mate, all that usual stuff, and I get the expected reply from the UK guy of "thanks, have a good day etc etc", all with a smile. Leaving France at the French passport control (and bare in mind we're leaving, so they should be happy), I'm saying the usual cheery hello, and I get the most miserable person you could imagine, who instantly assumes everyone is a terrorist, and just says "passport", not even a thank you or good bye lol. I know I'm being picky, but manners are high up my list, and overall the French authorities had none lol. I know its different cultures etc, just makes me chuckle.