Rule 34 Dev - 2boys anal anal_sex ass balls bane batman_(series) dc dc_comics dick_grayson doggy_style dominant_villain drawnpr0n erection from_behind from_behind_position gay male male/male male_only mask nightwing pants pants_down penis perineum sex tanline testicles uncensored vein veins veiny veiny_muscles veiny_penis yaoi|3533583496