Request - Big Mac Briefs

anus art backsack balls big anus big butt big macintosh blonde hair blonde mane blonde tail blushing bulge butt butt freckles clothed feral clothing dialogue earth pony equine freckles green eyes horse looking back male mlp mlp:fim my little pony my little pony friendship is magic nsfw ponut pony puffy anus rear view red body red fur request text tight clothing tighty whities underwear