What was Mountain Dew's original slogan?

The story behind the answer

“Yahoo! Mountain Dew… It’ll tickle your innards!” is the brand’s original slogan, launched alongside its early hillbilly-themed marketing. Mountain Dew began in the 1940s in Appalachia as a whiskey mixer, and “mountain dew” was slang for homemade moonshine. The playful “Yahoo!” and the dialectal “yore innards” matched the rustic, cheeky image—often featuring the character Willie the Hillbilly—aimed at evoking a zippy, fizzy jolt.

To remember it, think: moonshine roots, Appalachian flair, and a bubbly drink that “tickles your insides.” Later taglines like “Do the Dew” arrived decades after, reflecting the brand’s shift from homespun humor to high-adrenaline youth culture.