Rule 34 Dev - 2017 anthro anthrofied blue_eyes blue_hair blush breasts comic dialogue duo english_text equine erection fellatio friendship_is_magic furry futanari hair holding_penis horn hybrid_penis lying mammal medial_ring my_little_pony night_mares_v on_back oral penis princess_luna purple_balls purple_eyes purple_penis sex slypon teeth testicle text twilight_sparkle vein winged_unicorn wings|668044