abs anthro balls biceps blush brother brothers duo flaccid genitals grinding holding_waist humanoid_genitalia humanoid_penis incest_(lore) male male/male muscular muscular_anthro muscular_male navel penis quadriceps shower sibling size_difference triceps tuft wet bird_dog canid canine canis domestic_dog golden_retriever hunting_dog mammal retriever attempted_signature hi_res
They turned on the shower and let the water clean them for a moment, but after feelings his older brother's arms wrap around him, and stiff object press against his butt, the younger brother knew he was about to get dirty all over again.