PC Pranks: Scare your friends, parents or coworkers with this realistic program that simulates over 2 dozen system errors, crashes and jokes. With PC Pranks you can simulate anything from a blue screen of death, a window that runs away from the mouse, a mouse that moves all by itself, a fake online purchase, system crashes, crazy desktop effects and more. PC Pranks is a harmless program that is made to scare PC owners.