FURVERT!

2d_animation abdominal_bulge all_the_way_through anal anal_penetration anal_threading anatid animal_genitalia animated anseriform avian balls balls_deep bdsm beak bird bodily_fluids bondage bound breasts camera close-up cough cum dildo dildo_insertion drooling duck examination_room forced fucking_machine genital_fluids genitals gynomorph hair hammerspace hi_res humanoid_genitalia humanoid_penis inside intersex laboratory laboratory_equipment leaking_cum leaking_precum lifted long_penis long_playtime loop machine motion_tweening neck_bulge nipples no_sound non-mammal_balls non-mammal_nipples observation_window penetration penis ponytail precum raised_arm raised_leg saliva scientific_instrument sex_toy sex_toy_insertion shtoltz solo threaded_by_dildo threaded_by_object threaded_by_sex_toy transparent_dildo transparent_sex_toy unscrewed_duck_penis video