How about....
Our property manager got a call in the middle of the night from the police followed by a call a few minutes later from the landlord of the property adjoining ours (other side of two story duplex).
Apparently, our tenant had taken in a stray... man that is. He was a rough, tough kinda fella with all the baggage: Felony, jail time, and current drug dealer. Of course, he was not on the lease, nor did we know of him until this incident.
The rival bad guy drug dealers came after him that night and he apparently pulled out his mondo gun and shot a warning shot... diagonally through the wall, but at a 50 degree angle upwards into the neighboring apartment. Luckily no one was hurt.
Within days, our tenant realized he was abusive and worked with us to break the lease and disappear into a shelter. It worked out ok in the end, except for an unexpected broken lease with no remuneration and having to quickly advertise for a new tenant. Nothing more ever became of the situation.
We kept the bullet hole so we could spy on the neighboring tenant. :D Just kidding. A little joint compound goes a long way.