Seriously. They are. Don't ever even touch them.
It wasn't my fault. I was at The Museum of Somerset yesterday and in one exhibit they had a sword and cannon ball which you could handle.
My wrist is still whining. And every now and then it yelps and I think "OW! what did I do to deserve that?"
Followed quickly by a sheepish grin.
It was possibly entirely predictable and slightly silly. But I'm not entirely repentant. How would I have known how heavy it felt?