How to connect a ground wire to a duplex plug

http://www.VideoJoeKnows.com How to connect a ground wire to a duplex plug is easy....when you know how. Every howto person should know how to connect a ground wire to a duplex plug outlet because every plug needs to be grounded & you want to know how to do it properly....right? Is there a right & wrong way on how to connect a ground wire to an electrical duplex receptacle? All I know is that I'm going to do it the way "joe" tells me how, since "joe knows" lol!
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