Not my circus. Not my monkeys. (Polish proverb) Every time you feel yourself getting drawn into other people's nonsense, repeat these words. Great to remember, because I am trying to not get sucked into peoples drama
no thanks I'm not gonna let idiots ruin my day. Be yourself no matter what other people think. Trust me you'll make much more friends and have much more fun. If they think you're weird they're not worth it.