For the sake of intellectual stimulation, Neo. Hypothetically, say if I used my left hand instead, but right when we would shake hands, I change to my right hand, then you quickly retreat, then I say I am kidding, and give you my left hand again, then you go to shake it, and I give you my right hand, which wasn't enough to confuse you, so I then said just kidding, and I gave you both of my hands, which should cause you shake my right hand instead of my left hand, because I already tricked you the first time when I gave you my right hand after the left hand, then gave you my right hand again, so your brain is thinking I would give you the right hand again, but this time I gave you both hands, and unbeknownst you, I also snuck in the psychology of placing my left hand further than my right hand, which made you believe it was not a good hand so you shake my right hand and I have succeeded! Then you get mad at me, when you confused yourself. I then tell you a joke:
What do you call a business handshake? A hand job!