Bed-Sitting OTK Spanking
It turns out that an OTK spanking can be physically tricky for some people. What if you slide off the knee and fall? The solution is for the spanker to sit on a bed, which allows a safe, secure, and stable platform for over-the-knee spankings. The upside for the spanker: you can spank her for longer!
This photo is from the cover of a vintage Fetish Films Quarterly magazine.
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I like the vintage stuff.