FURVERT!

2021 animated animated_gif anthro big_breasts big_butt bouncing_breasts breast_expansion breasts bulge butt crossgender digital_media_(artwork)equid equine expansion fantasy female frame_by_frame horse huge_breasts huge_butt jace_(masterj291)male mammal masterj291 mtf_crossgender potion short_playtime simple_background solo thick_thighs transformation white_background