1boy 2018 anthro arms_tied athletic ball_gag bandana big_ears big_penis blindfold blush bondage bound cute drooling foreskin fur furry gag gagged hair half-erect hands_behind_back hands_tied hi_res humanoid_penis leaning leaning_forward m1chl0 male male_only mammal monochrome mustelid no_nipples nude otter penis retracted_foreskin saliva simple_background sketch solo spread_legs spreading summer_(m1chl0) sweat testicles uncut worried yogoat