FURVERT!

1:1 ambiguous_gender anthro balls big_balls big_butt big_penis bodily_fluids briefs brown_body brown_fur butt camelid chair clothed clothing duo extreme_size_difference face_in_ass facesitting foreskin fur furgonomic_underwear furgonomics furniture genitals hair hi_res huge_balls huge_butt humanoid_genitalia humanoid_penis inside laboratory llama male male/ambiguous mammal micro on_chair pencil_(object)penis saggy_balls short_tail sitting sitting_on_another sitting_on_chair size_difference smothering sweat sweaty_butt tail tighty_whities underwear underwear_only uromatsu white_briefs white_clothing white_hair white_underwear