I concede this one is at least slightly off-topic, but I'm going to post it anyway. It's breaking news from my hometown of Kansas City:
Charges filed in Overland Park banjo self-defense case
Police say the Monday banjo blow to the head stopped the assailant, who was treated for a cut and taken to jail.
* * *
The two 21-year-old friends were drinking and arguing about a band when [one] grabbed the kitchen weapons [a frying pan and a knife] and attacked, police said. The victim happened to have banjo in hand and used it in self defense....
The smell of alcohol was prevalent, police said.
On the other hand, I guess if the other gentleman is so dishonorable as to use a frying pan and a knife instead of a guitar, you would have to escalate anyway.