You sit there still deep in thought, until suddenly you feel your tail raise, involuntarily followed by a loud * plop*. You turn around, startled accidentally stepping one of your hooves into the warm, thick substance now piled up onto the floor. You manage to turn around further and see it and sure enough, it's a big steaming pile of horse manure that you just dropped without any control otherwise. You stare at it embarassed, until you feel it coming again, and *plop* another large pile dropped from your horse ass and you can't stop it.
Years ago, Cassey had a problem with eating her own shit out of the yard, thankfully you managed to train that out of her, unfortunately though, no one trained you as your begin to drool open mouth, you gotta try a bite. Good thing you're a faster learner than Cassey is though, because almost instantly after you bury your snout in your manure and lap it up into your dog mouth, the rancid, meaty taste of warm shit becomes too much to bear and you spit it out, proceeding to rush over to the sink and wash the taste out of your mouth.