There are lots of idiots and jerks in the world. They can only make you mad if you let them. I know it's easier said than done. Don't let an outside force affect you. If you let another person choose your mood, they are in control of you. In my cup toss, I'm sure they wanted me to get mad, fall, or try to retaliate. Or at least get startled. Or maybe be afraid. None of that applies to me. Stupid kids will be stupid.

Smile and wave and say "Hi Pat". "Pat" could be either sex.