His pudgy digits trailed downward along the fine hairs and crevices of her curvaceous flanks; starting from the base of her tail and following along the contour of her rump, before stopping on either side of Rarity's marehood, and spreading her thin, elegant mare-lips open; causing the folds of her vulva to part like a fleshy curtain, unveiling a wall of sinuous pink flesh leading into her twisting, narrow depths. 