balls blonde_hair blonde_mane blushing_at_viewer bodily_fluids bridle building chastity_cage chastity_device chest_tuft cloud day detailed_background dripping ears_up farm fence feral front_view fur genital_fluids genitals grass hair harness hooves horny house humiliation indigo_furry_mix_v120_hybrid indigofurrymix_(model) leaking_precum light male mane metal_chastity_cage mostly_nude open_mouth outdoors outside petplay plant ponyplay precum precum_drip precum_string prompt quadruped raised_tail roleplay rural slave solo solo_focus standing submissive submissive_feral submissive_male sunlight three-quarter_view tuft village wall_(structure) white_body white_fur wood_wall yellow_tail mechanic_31 my_little_pony earth_pony equid equine horse mammal pony tail colorful detailed full-length_portrait hi_res portrait prompt_metainfo shaded three-quarter_portrait
A stallion that is kept and works on the farm. Local safety regulations dictate keeping stallions locked up, except for regular veterinary examinations or semen collection. For how long and why he got to this farm - I'll leave it to your imagination. He can stay here voluntarily, and receive money after the completion of the contract, but it can also be correctional/ compulsory labor, and maybe slavery. 

In any case, he is already clearly horny and wants to cum badly, but he can't help himself in any way. All that remains for him is to wait for the end of the break to return to work, and wait until it's time for a veterinary examination or milking.