Rule 34 Dev - 2020 2d abs before_cum big_penis bodily_fluids boss_monster bovid caprine furry furry_male furry_only genital_fluids genitals hi_res huge_cock hyper hyper_genitalia hyper_penis male male_only mammal masturbation muscular muscular_legs muscular_male pecs penis solo tridark undertale undertale_(series) video_games xenn_(tim2pp)|11781429832