In a tight leather mini-skirt, Belinda Lawson bends over for the latest test in Mr Johnson’s research at The Institute. “I thought he was running out of implements to use on my bottom,” said Belinda, but Helen found a riding crop!” It’s not long before her skirt is raised so the crop can be used on her bare cheeks: see them jiggle in awesome slow-motion.

In a tight leather mini-skirt, Belinda Lawson bends over for the latest test in Mr Johnson’s research at The Institute. “I thought he was running out of implements to use on my bottom,” said Belinda, but Helen found a riding crop!” It’s not long before her skirt is raised so the crop can be used on her bare cheeks: see them jiggle in awesome slow-motion.