Rule 34 Dev - 2boys abs anthro armpit_fetish armpit_licking armpits back biceps black_border blue_eyes blush crotch_grab dragon dumbbell erection exercise fangs gay green_eyes grope heterochromia holding_object horn interspecies licking male male_only monochrome muscular muscular_male ninjatertel no_nipples nude open_mouth partially_colored pecs penis scalie short_hair standing sweat tail teeth tongue tongue_out weightlifting weights white_background workout yaoi|2340241808