Mistress Riley is a big girl. She weighs 240 lbs (109 Kg) and Mistress Roxy is also quite heavy. She weighs 160 lbs (73 Kg). When the two Mistresses decided to do some pony riding, the poor horses were worried. The smaller pony was really hoping he would get to carry Roxy but today was not his lucky day. He had to carry Mistress Riley. The Mistresses mounted their ponies in all-fours position and using their whips, they made the ponies carry all their weight. After awhile, the little pony could not continue, but Roxy would not let him off so easily. They switched mounts. Mistress Riley mounted the bigger pony and Roxy mounted the smaller pony. They rode their ponies again until the smaller pony simply could not continue.