Rule 34 Dev - 1boy 2014 5_fingers abs absurd_res anthro armpits balls biceps big_muscles bodypaint clenched_teeth closed_eyes cum cum_on_penis cum_string erection fishbook5 grey_penis grey_skin hendrik hi_res horn humanoid_penis leaking lunalei lying male male_only mammal markings masturbation muscular muscular_male nude on_back orgasm pecs penile_masturbation penis precum rhinoceros solo spread_legs spreading teeth tribal|2485426752