Ask a joke!

A psychopath chased a passerby with a knife and finally cornered him. There are two results: 1. The psycho handed the knife to passers-by and said happily, it's your turn to chase me. . . . 2. Psychopaths ask for directions. 1+ 1=? Passerby A said 2 with trepidation, then mental illness killed Passerby A and said with a straight face, You know too much. . . .