Regular Show - Season 3

When Muscle Man's father, Muscle Dad, dies, Benson asks Mordecai and Rigby to go along with Muscle Man to spread the ashes of his father's hat (which reads "World's Greatest Trucker") at the highest point at the Trucker Hall of Fame. While at a truck stop, three truckers tell Mordecai and Rigby that Muscle Man's dad wasn't really a trucker like he told Muscle Man when he was a kid but instead he was a forklift driver.