Here are 3 possible justifications for each action:
...refuse an invitation to someone’s party?
1. If you already had other plans that night
2. If you weren't feeling well
3. If the party was very far away and you didn't have transportation
...jump out of the window?
1. If there was a fire in the building and the stairs were blocked
2. If someone was threatening you with a weapon inside the room
3. If you saw an animal being attacked right outside the window
...sue your hairdresser?
1. If they seriously injured you during a hair cut/style (e.g. cut too short, chemical burn