I've waited over 30 mins in line before, this person ahead of me was checking on this and checking on that.... yes for over 30 mins (and that was since I got there, who knows how long it went on before). I didn't really care, but my dad was waiting in the truck for me so that made it worse.
Am I impatient? Nah, I have to wait for a lot of things in life, games, game systems, TVs, this and that. I used to want everything now now now, but now that I've grown older I don't mind waiting a little.