Quote:
Originally Posted by sltr
i'm surprised mythbusters hasn't busted this shit wide open!
i heard the tac in the shoe ploy prolly 20+ years ago
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* Insert a small nail or tack in the toe area of your shoe and press down on this during the control questions to elicit a pain response. This is a sound method, but it is easily defeated if the polygrapher asks you to remove your shoes.
* Contract your anal sphincter muscle when a control question is asked. While also highly effective, this method may (or may not) be discovered with the use of pressure-sensitive seat pads that are now commonly used.