Rule 34 Dev - ama69 anal anal_sex anatomically_correct anatomically_correct_genitalia animal_genitalia anthro anus beaver_tail big_penis blue_body blue_fur bodily_fluids clothed clothing condom cum cumshot cute disney dr_heinz_doofenshmirtz duck_bill duo ejaculation embarrassed erection feral filled_condom flippers fur gay genital_fluids genitals hat headgear headwear human japanese_text love male male/male male_only mammal monotreme orgasm penetration penis perry_the_platypus phineas_and_ferb platypus print_clothing romantic romantic_couple romantic_sex scared scientist secret_agent sexual_barrier_device size_difference small_penis text yaoi zoophilia|12295281696