How mad would YOU be?

• Livid. Your sister acted like a disrespectful skank. She owes you an apology and new sheets.

• Kind of mad, and kind of disturbed... but there's no real damage. Maybe it's better to just get over it and laugh it off.

• Not mad at all. You threw a big party. People get drunk and hook up at big parties. Take it a sign of your success as a host!