Rule 34 Dev - anthro anus ass balls big_anus big_butt big_macintosh_(mlp) cake_top cutie_mark digital_media_(artwork) earth_pony equid equine friendship_is_magic genitals hair hasbro hi_res horse huge_butt looking_at_viewer looking_back male mammal my_little_pony nude pony puffy_anus simple_background smile solo tail wide_hips|11519815152