Subway

What was the most annoying thing to happen to me today?
I had to sit and wait in line while the person in front of me at Subway ordered 4 sandwiches...
I know, this is to be expected at a fast food establishment, but for some reason whenever I go to Subway this happens. The strangest thing about this occurence is that had the three other people whom she was ordering for been there with her I would have had no problem with it...