As I was standing in line at a busy store over Christmas, the customer being served answered his phone and left the rest of the line waiting. When the salesperson tried to serve someone else in the meantime, customer #1 yells at him because he's 'being served'.
He stormed out of the store empty-handed, cursing and swearing and promising to never come back after the store manager kindly asked him to stop wasting the time of his salesperson and the other 20 or so of us patiently waiting in line.
