Rule 34 Dev - 2boys about_to_burst balls belly belly_expansion belly_inflation belly_rub big_balls big_belly big_penis canid canine canis cudacore cudacore_(cudacore) erection expansion feeding_tube feet force_feeding forced_fingering furry genitals hi_res hose_in_mouth hose_inflation inflation kangaroo lgslam liquid_inflation macropod male_only mammal marsupial navel outie_navel paws penis ready_to_pop struggling stuffing toes tube_feeding weight_gain wolf|12642077800