Sometimes when you start smiling or laughing it can be hard to stop, especially if you are a naughty lady like in this update. Here the act of smiling or grinning is almost a sign of defiance, it is certainly a further sign of naughtiness. Stop the smile and you not only punish the crime but halt the defiance.
When Jenna Jay comes for a job at Unladylike Manor she is not at all bothered that she will be paddled and otherwise beaten as a part of the job. Indeed, it is hard to stop her smiling. In an effort to wipe the smile from her face Lady Sarah gives Katie the job of paddling her over her tights.
This first attempt at stopping Jenna from grinning does not work, she smiles all the way through the punishment. Next the paddling is given on her bare bottom, this really hurts as Katie lays the paddle on really hard.
You can find out whether Katie manages to stop Jenna from grinning on Spanking Sarah.