Good fus: finding a full 5th of bacardi 151 under the couch, the party host setting his table on fire in a small contained corner with said bacari, a solid male/female ratio with minimal gay guys.
BAD fus: spilling beer/liquor onto someone (see party foul
), people making out with other people's girlfriends, packing heat
to a party, pulling knifes/guns on people, lighting things on fire that don't belong to you, high male/female ratio (see sausage fest
), or a large ammount of gay guys.