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4:3 abs anthro balls biceps big-red big-red_(character)big_balls big_muscles big_penis biped bodily_fluids dragon erection european_mythology genital_fluids genitals glans hair hi_res huge_penis humanoid_genitalia humanoid_penis looking_at_viewer male masturbation muscular muscular_anthro muscular_male mythological_creature mythological_scalie mythology nipples non-mammal_balls nude pecs penile penile_masturbation penis pink_glans pink_penis pinup pose precum red_body red_skin scalie sitting solo spikes tail western_dragon yellow_balls