I am left-handed in everything I do, with the somewhat odd exception of using a knife and fork. I always hold a spoon left-handed, though. I bat, bowl and throw left-handed. If I punched (I don't, as I'm a softie), I would punch left-handed. I have to hold a telephone in my right hand as I seem to be right-eared, but I wish I didn't have to. I use all tools of any kind left-handed. My handwriting is terrible, as I have to avoid smudging what I've just written, meaning I have a bad writing action. I have forcibly taught myself to use a mouse with either hand in order to prevent RSI. I play the harmonica the right way round, low notes to the left. I don't play string instruments at all, but if I pick one up I hold it left-handed. There would be absolutely no chance of my holding a fiddle bow in my right hand, or plucking guitar strings with my right hand. Not a hope in hell, I just know it. If a lid or a screwcap is on too tight, I can't work out which way to go to undo it unless it's vertical. Same with screws that are in too tight, especially if I'm having to get at them upside down or from the side.

But I kick a football with my right foot only. Never worked that one out.