Re: Complete this joke...
 

Little Johnny had a foul mouth and his teacher always tried to correct him whenever possible. One day the class took a field trip to visit a farm, and Little Johnny and his buddy Billy ran off through the cornfield. The farmer had just finished harvesting the corn, and buddy Billy tripped and fell on a corncob, which got lodged up his butt. Johnny came running back and breathlessly told the teacher: "Teacher, teacher! Buddy Billy fell and got a corncob shoved up his ass!"
Teacher: "Johnny, it's 'rectum'"
Johnny: "Rectum?! Damn near killed 'em"