Uncle Rusty is a wise man. A while back he retired and purchased a modest home near a junior high school. He spent the first few weeks of his retirement in peace and quiet, puttering around his workshop.
That is of course until the school year began. On the first day of school three young boys, full of pent up energy from a full day of school, came down his street. As they walked down the street they beat rhythmically on every trash can they passed.
Day after day, it was the same thing. Beating, clanging and pounding out a rhythm on the cans as they walked down the street. Poor Uncle Rusty just couldn't take it any more.