Thomas & Friends S19, S20 Season 20 Episode 20 Mike's Whistle

When Duck's driver boils an egg in his whistle it leaves Duck making a very funny sound. The other engines think it is very funny, but Mike insists that an engine that can't whistle is not a proper engine. Mike can be grumpy and tends to overheat, but when he loses his temper with a cow later that day he blows his own whistle cap right off and into a field.