Rule 34 Dev - 5_fingers abs anthro balls biceps big_muscles bodily_fluids bodypaint clenched_teeth cum cum_on_penis cum_string erection eyes_closed fingers genital_fluids genitals grey_body grey_penis grey_skin horn humanoid_genitalia humanoid_penis leaking lying male markings masturbation muscular muscular_anthro muscular_male nude on_back orgasm pecs penile penile_masturbation penis precum solo spread_legs spreading teeth tribal lunalei hendrik mammal rhinoceros 2014 absurd_res digital_media_(artwork) hi_res|4839693775