You can make lefties become righties. DH is a prime example. His mum made him righthanded by making him use his right hand for everything. Which explains why his writing looks like he's using the wrong hand LOL.

And in the good ol' days, left handed kids used to get hit with a ruler and made to use their right. So you can influence their handedness if you really want.

I don't really care if DS is left or right handed but if he's a lefty - he got it from his dad.

Just remember - only left handed people are in their right minds