"Wait, you mean to tell me that all that demoralizing, back-breaking labor is done by earth ponies?! Trixie may claim to do the impossible, but what you're saying actually IS impossible!"

Twilight had learned to accept Pinkie Pie for what she was a long time ago. Eccentric, aloof, and somehow never short of energy or surprises. She would have continued to not question anything about that whimsical pony, if it were not for her sister, Maud Pie. A pony just as capable of performing absurd feats, ones that defy all logic and reason. Ordinarily she would have pushed these feelings aside before it drove her crazy, but a chance encounter with a certain powder blue unicorn at the train station brought these questions back to the forefront of her mind. Perhaps she could gain some insight on what exactly a rock farmer was from somepony who actually had firsthoof experience...

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Written and submitted for EqD's Writer's Training Grounds #012 with the prompt, "In Equestria, there's no such thing as a 'simple' rock farmer."