You can always spot an American outside of the USA as they take their shoes off at airport security checks despite most countries not requiring it.
I was in the security queue at Schiphol a few weeks ago - I am sure some of their security staff have a very big foot fetish - their definition of a thick sole or high heels is "curious" to say the least. There's one or two there who seem to relish pat downs too...
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Anyway, the security person asked one lady to take her shoes off...she started shouting back, "I have a code, I don't have to do, I paid to keep my shoes on." after a little arguing, she announced she was "an American and has TSA privileges"
I'm going to Hell for this, but at this point I laughed; loudly....anyway, I passed through security (with my shoes on), no pat down and stood waiting for my bag. The lady then came through, rather annoyed and shouted at me "I am an American and I know how things work".
I looked down and said back "Yes, but you still took your shoes off".
I collected my bag while security decided they needed a very close inspection of hers...
Heathrow...I delayed a Finnair flight because transfer security took over 2 hours (I was flying in from a delayed Boston flight). First time ever Heathrow managed to get my bags to the connecting flight, but couldn't get someone to take them off while I was stuck in security so the plane could depart.