rule 34 1boy absurd res animal genitalia animal penis anthro arms tied ball stretcher ball stretching balls ballsack body fur bondage bound bovine bovine penis brown fur cattle clenched teeth closed eyes cock and ball cock ring erection genital genitals hands behind back hi res horns male male only mammal nude male pain penis restraints rope rope around balls rope bondage rope cock ring saikanjp scrotum side view simple background smooth penis solo submissive submissive male tail tail tuft teeth testicles 5701439