Here's my favorite one:
I once went on a call with my cousin who is a homicide detective. We get to the scene and the officer there leads us to the body and states "The victims name is Juan Ortiz." We all look over at the body and he's got a massive hole in his chest. My cousin asks, "What killed him?" The officer responds, "A golf gun." My cousin looks at the officer, "What the hell is a golf gun?" The officer shrugs, "I dunno, but it sure made a hole in Juan."
I'm here all week. Be sure to tip your waiters and waitresses.