Rule 34 Dev - 2boys 5_fingers abs animal_genitalia animal_penis ankles_tied anthro armpit_hair balls biped bit_gag black_balls black_eyebrows black_hair black_hooves black_nipples black_penis black_tail body_hair bondage bound bucephalus chastity_cage chastity_device digital_media_(artwork) duo equid equine equine_penis erection eyebrows fingers flaccid fur gag genitals green_eyes grey_body grey_fur grin hair hands_behind_back harness harness_bit_gag harness_gag holding_object holding_whip hooves horse looking_down low-angle_view lying male male_only mammal metal_chastity_cage muzzle_(object) ninetht nipple_piercing nipples on_side pecs penis perineum petplay piercing pink_penis ponyplay red_body red_fur red_stripes restraints roleplay rope rope_bondage short_hair smile striped_arms striped_body striped_fur stripes whip worm's-eye_view|6472976464