sentences:  Soon, however, their pranks shift into vandalism and their victims gather at the Simpson house to complain.Homer tried to calm the crowd by characterizing the pranks as childish mischief until he is himself "pranked" by the kids on the roof above him, who drop a live pig which lands on his head.Sideshow Mel exclaims that "those monsters must be stopped", prompting Ned Flanders to offer his help.