My Step-Brother, My Pony Ariel is such a brat. She has turned her step-brother into her pony. "Every Princess deserves a pony," she says. She mounts him and you can tell that he is not happy about his new role. But Ariel doesn't care. She slaps his butt and pulls hard on the reins to make him perform for her. She rides him on all fours for awhile and then makes him do donkey lifts until his legs are on fire from the exhaustion. Then it's back on the ground for more all fours riding. Ariel really enjoys her new pony and we believe her step-brother's life will never be the same.