Sometimes you just have to close your eyes, count to ten, take a deep breath, remind yourself that you wouldn't look good in prison stripes and just smile at that dumbass and walk away. Well, not just sometimes.
"Accept the fact that some people didn't intend to let you down. Their best is just less than you expected." ~Thelma Davis <-- Never thought of it like that before. Wow, that really reframes one's perspective.