S01E35: Rocky & Bullwinkle - Jet Fuel (14) - Bullwinkle’s Water Follies or Antlers Aweigh

Despite going over Thundering Falls, Bullwinkle, by remaining cuke as a coolcumber, manages to snatch the last available mooseberry bush in the entire country, but a federal plant inspector with a familiar accent turns up, spraying the precious bush for blight, and forthwith, he and the bush disappear behind the huge cloud.