no deffo not iced tea, tea is supposed to be served hot, in a mug with milk and sugar to taste!
I went to the US for a 3 month holiday visiting friends, I think I must have done all the mistakes possible! First day there we where supposed to meet up with some friends in a local cafe, I ordered a tea, they all ordered coffee or milkshakes, my tea arrived in a glass, with ice cube and a stick to stir it with! When I clarified that I wanted HOT tea, the waitress looked at me like I was some kind of alien, luckily my friends where regulars and the cafe owner actually went out and bought some 'twinnings breakfast tea' from a local store so that I would have a supply for the duration of my stay, the day before I left, he gave me what was left of the box as a gift saying 'I'm never gonna use them when you're gone, you're the only one who drinks hot tea!'
I think the most embarrasin mistake I made though was on the first night, I was low on smokes, so asked where the local store was, when asked what I needed, my reply came 'Oh I just need to go and pick up some fags, don't have enough to last the evening', the look of shock on people faces was quite funny actually, and then it took me about 10 minutes to try and explain that yes in the UK fag is a slang term (not a very nice one) for a gay person, but its more commonly used as a slang term for cigarettes.
But I do have to say the funniest moment of my entire trip was when I was at a bar in dallas, I think its called Razoo's, and the guy stood next to us turned aorund and said 'Hey man, I'd recognise that accent anywhere!', I reply 'Oh really?' (expecting the 'you're from australia' line again), he replied 'I sure do, what part of New York are you from?', I think my friend was enjoying his drink right up until that point, as he sprayed the bartender with the mouthfull he just took!