Put your hands in front of you, palms facing outwards. Your left hand is where thumb and index finger form an L. (Or if he's into cars, explain it via `where the cars drive'.)
When I was little, I always stood in the kitchen on the same chair. The left wall was dark, the right wall had a window illuminating it. Even now whenever I'm distracted and can't answer out of reflex, that image pops into my head :-)
Put your hands in front of you, palms facing inwards. Where the thumb and index finger form an L, that's your right hand.
And of course, cars where I grew up (Australia) drove on the opposite side of the road to the cars on tv (mostly US shows and movies).
I think these are both great ways to help teach kids left and right; I just like to point out the flaws since neither way helped me (and I still have to think about it). Of course, I'm far more messed up than most kids will ever hope to be!
Yeah - I was making the point about it being a confusing tool to use. When I'm outside, cars drive on the left; when I'm inside watching a movie, they drive on the right; so my brain isn't getting wired with clear signals.