That sounds like a pretty good idea, dund. I wonder how Amy would feel about that? I'm guessing she would love the idea of Penny getting spanked, almost everybody does, but Penny spanking Sheldon? Would she be turned on or jealous? My guess would be, probably a little jealous, but too turned on to care.
I think Bernadette has been overlooked as a potential spanker. Actually the more I think about it there are so many possibilities. We need a show called "The Big Spank Theory". Same characters new twist. I'd never miss an episode of that!