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animal_genitalia anthro anus bdsm bondage bound collar crouching darkgem dragon genital_slit genitals hands_behind_back horn humanoid_genitalia humanoid_penis lying male male_anthro mohawk musclegut muscular muscular_anthro muscular_male mythological_creature mythological_scalie mythology narrowed_eyes nipples nude on_side open_mouth overweight overweight_anthro overweight_male penis presenting presenting_anus presenting_balls restraints scalie sketch_page solo spiked_collar spikes spread_legs spreader_bar spreading tapering_penis tongue tongue_out vein veiny_penis