Zakk Wylde may be known as one of rock's greatest thrashers, but that doesn't mean he doesn't get scared every once in a while. According to court documents obtained by TMZ.com, the Black Label Society guitarist admits to being "terrified" of an obsessed fan who he claims recently left a "sacrifice" at his house. The fan in question is Wylde's 20-year-old neighbor. Zakk recently called the police to his home regarding an incident with the young man, which also led to a 72-hour hold for mental evaluation. Wylde says the neighbor has been "deemed mentally ill" and the ax man has requested a restraining order against him. Both parties are due back in court later this week.