i was at the mcdonalds in my town awhile ago, and there was a fella in front of me about 19 or 20 yrs old who demanded that his sandwich be remade to look like the one on the menu picture. even though i wasn't associated with him in any way, i felt so embarassed that i had to leave the line and go somewhere else instead, i just couldn't be in the same place as him. theres no excuse for losing your temper over getting an incorrect order, if you get mad because you get the wrong food you're an asshole. small mistakes like that can always be fixed.