Rule 34 Dev - anal anal_sex animal_genitalia animal_penis anthro avian balls big_balls big_dom_small_sub big_penis christmas diphallia diphallism dragon equine_penis erection feline group group_sex hat holidays horsecock huge_balls huge_cock looking_back male mammal multi_penis muscular muscular_male nubbed_penis penetration penis penis_bow penis_ribbon ribbons santa_hat sex size_difference smile tankh threesome two_subs_one_dom vein yaoi|3363103888