Forget killer clowns. Halloween was once a very different affair from the Americanised gorefest it is now. In its-original Irish form, as when I was growing up, it was an opportunity for children to dress up in their parents’ clothes, wear a mask and a hat and go begging from door to door for nuts, apples or money for bobbing — viz, sticking your head in a basin of water to dive after coins and apples.