FURVERT!

2d_animation animal_genitalia animal_penis animated animated_gif balls becoming_erect belly_slapping_masturbation big_penis cutie_mark earth_pony equid equine equine_genitalia equine_penis erection feral genitals hasbro herculesrazor horse male mammal medial_ring motion_tweening my_little_pony nude penile penis pony short_playtime solo standing throbbing throbbing_penis vein widjet