Perhaps I'm wearing it wrong™, but I must be taking a half dozen screenshots per day, accidentally, with the back of my hand.
If you go to the Apple website, you will see the correct position to wear the watch - up your arm, to the left of your "wrist knuckle"

I don't wear mine above the wrist, as some are saying, I wear it on my wrist where I've worn watches all my life. I have never had an accidental screenshot.
Haha, I've taken a couple, too, while drying my hands in the bathroom 🙂
Watch always whistles when I dry my hands (I assume is the air going into the mic hole) i thought this was pretty funny so I thought id share!I've been wearing watches for a couple of years. And in my whole life I have never seen anyone wear a watch above the bone. And when getting a watch fitted they always fit it closer to the hand. Not saying it's wrong. Wear it however you like. It imo looks goofy. The apple watch is not available in Sweden yet so I'll see how my way of wearing it will interfere with the buttons. Hopefully it won't.
Better question: why in heavens name would you need to screenshot on such a tiny device? I'd rather take it over on my phone.
I take my watch off before doing a number 2Haha, I've taken a couple, too, while drying my hands in the bathroom 🙂