Taking into account: A) Likelihood of knocking the person out B) Ratio of surrounding people who will laugh rather than recoil in horror. C) Funniness of name. (ex/ "I knocked his @+* out cold with a _____") I came up with a stale, frozen My friend said: I think biscuit's pretty hard too beat. EDIT: I'm imagining these objects being thrown at target within 10 feet. The closer, the greater chance of decleating.