anal anal_insertion anal_penetration anus ass_up ball_gag blindfold cub cutie_mark dildo duo english_text equine female feral friendship_is_magic fur gag gagged green_eyes hair hat horn insertion lesbian mammal multi-colored_hair my_little_pony nazi penetration purple_fur purple_hair pussy sex_toy smudge_proof sweetie_belle_(mlp) text twilight_sparkle_(mlp) unicorn young