This is definitly an intersting thought, and now I have something else to waste all day thinking about Wonderful!

Kallus - I saw a video from Insex that was very similar to what you were describing. the slave was deeply impaled with an electrified dildo, then stood on her toes. Whenever her heels lowered more than half an inch from her starting spot, she was shocked. I was surprised at how long she was able to last on her toes...I guess necessity is the mother of desperation (or something like that). Just a thought.
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