My buddy brought a girl to his place after the bar one night in College.
A week or so later we were having a little post bar party at his place and that girl showed up, and found a butter knife and threatened to stab my buddy because there were other girls there.
When the cops showed up the first thing the Officer said, and I will never forget this.... "Boys! This is why you always go to their place, that way they don't know where you live."