FURVERT!

1:1 3_toes absurd_res abto_mat ambiguous_species anal anal_penetration anthro arms_bound_behind_back ball_gag balls blindfold bondage_furniture bound catheter catheter_in_urethra feet flaccid frogtied front_view gag genitals hands_behind_back hi_res humanoid_genitalia humanoid_penis kemono legs_tied line_art male mammal medical_instrument monochrome navel nude penetration penis scientific_instrument shaking small_penis solo toes tube_in_ass urethral urethral_penetration