3d_(artwork)animal_genitaliaanimal_penisanthroanthro_on_anthroanthro_penetratedanthro_penetratinganthro_penetrating_anthroballsbig_breastsbig_buttbreastsbuttchristmaschristmas_treecosmic_hairdigital_media_(artwork)duoequidequineequine_genitaliaequine_penisethereal_hairfemalefemale_penetratedfriendship_is_magicgenitalsgynomorphgynomorph/femalegynomorph_penetratinggynomorph_penetrating_femalehasbrohi_resholidayshornincest_(lore)internalintersexintersex/femaleintersex_penetratingintersex_penetrating_femalemammalmy_little_ponymythological_creaturemythological_equinemythologynipplespenetrationpenisplantprincess_celestia_(mlp)princess_luna_(mlp)rinnysexsibling_(lore)sister_(lore)sisters_(lore)treeunicorn