Well, while watching the show, I realized that Applejack, as a farmer, tends to speak with Southern American slangs and idioms, like, 'Y'all' and 'She's a few apples short of a bushel'. That's cool. I also realise some of those slangs and idioms and all have horse puns in it, like 'goody FOUR-shoes' and 'horse-drawn, horse-drawn carriages'. That's cool too. But, no matter how much I research, I possibly cannot find what is the origin of the phrase that Applejack says, 'Well,Wallop my Withers, Spike!' which is from Season 1 Episode 3 The Ticket Master! In fact, I know wallop means to hit or strike, and withers is the back of an animal between their shoulder blades, but I never heard the phrase, 'Well, hit my back, pardner'. Can somepony, anypony, please tell me what is the original phrase of 'Wallop my withers'?