Thomas & Friends (1984)

S02E01 Thomas, Percy and the Coal

Thomas is proud of his shiny blue paint and can't help but show it off. However, his pride takes a hit when he gets splattered with coal dust while at the Coal Hopper! Percy finds the situation amusing and chuckles at Thomas's misfortune. Yet, the tables soon turn when Percy experiences a coal-related blunder of his own, reminding him that accidents can happen to anyone.