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A thick curdled residue found in equine semen harvesting gear. True pony yogurt develops after semen harvesting equipment is used many times without being cleaned.
Rancher 1: Hot damn! What is that smell?
Rancher 2: Aw, that's just Jeanine. She finally got around to cleaning that horse cock sleeve and now she's got pony yogurt up to her elbow!
by tupac_lives July 22, 2016
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