The Diddy & Dixie Barrels are a type of Auto-Fire Barrel found in the games Donkey Kong Country 2: Diddy's Kong Quest and Donkey Kong Land 2.
This kind of Barrel can only be used by the Kong whose face is pictured on the Barrel, which means that only Diddy Kong can use the Diddy Barrel and vice-versa. A Kong will instead pass through their friend's barrel should they come in contact with one. When the corresponding Kong jumps into their Barrel, they will be launched out automatically.