According to the National Academy of Science (which isn't really on my trust-list), you can turn a righty into a lefty by applying magnets to the dome. "Haha, is that why you have all the refrigerator magnets in your hair?" And no -- I'm already a lefty. I'm trying to get the bullet out.
We know that most people are right-handed and tend to choose their right hand to perform tasks. But what if they were suddenly conflicted and chose the left instead? That's where the magnets come in. Just apply some transcranial magnetic stimulation (TMS) to the brain and presto! A new lefty is born.
Don't be alarmed, this is actually a good thing. Especially for people who may have lost control of their dominant side in a stroke or other injury.
Sure you could undergo some transcranial magnetic stimulation or -- OR -- you could give Magneto a blowjay. Just a heads up though: you will lose all your fillings.
Thanks to Greg and Shaun, who tried to turn themselves from lefties to righties by kicking each other in the nuts. How, uh, how'd that work out for you? Painful huh? Shocking.