Rule 34 Dev - 2boys adventure_time blush bottomwear cartoon_network clothed clothing commentary dialogue duo erection erection_under_clothes fern_the_human finn_the_human finncest flora_fauna flower fully_clothed gag greyscale hair hair_flower hair_ornament headwear highres human_male junipurr kneeling legs long_hair male male_only mammal mechanical_arm monochrome multiple_boys open_mouth plant_boy plant_clothes plant_hair plant_humanoid prosthesis prosthetic_arm ring_gag selfcest shota shota_on_shota tongue tongue_out toony topwear western-style_art yaoi young_human young_male|4376238801