I'm also annoyed because I choose the wrong line to wait in--it was a difficult decision. Two older ladies, both with their wallets all ready, but the one I was standing behind said something like, For my first order, I'd like a small decaf Americano with whipped mocha chai on top. I gambled and moved to the next line, and was dismayed to find that this lady was on a dogged search for quarters in her seemingly bottomless handbag.
Thirdly, and lastly (for now), there's a kid in here who is talking to no one I can see. I believe he is Skypeing. I believe he should not be. As when people in public places engage in long conversations on their mobiles, I think it's rude or weird or socially out of place to be video chatting with someone in public. I'm judging him because a lot because I feel like he purposefully set up the scene with his floppy blond hair just so, and his unshaven face in the Bachelor-Chris style and then chose this coffee shop as the setting for his online encounter. These are the assumptions I make about strangers when I'm in a cranky mood.