Mistress Fiona wanted to test whether the chastity device she had made this guy wear was working. So she removed her clothes and remained with her bra and a g-string. She then showed off her hot ass as well as her nice tits. The guy was turned on and she took his dick and she played with it while he wore the device. It hurt him as his dick expanded and he could not do anything as he was wearing it. She knew it worked.