Finally was Lucy. She was 10 and I was 12 and we used to play in the park in the summer holidays. I would push her on the swing and her bottom would hang over the edge of the seat and I would slap it as it swang back towards me. Then, one evening as we sat on the grass, I pulled her over my lap and smacked her hard, just once. She was wearing tight blue jeans, with ‘W’ embroidered on the pockets in red. That single smack stung her perfectly presented rear, and she yelped ‘Ow, that hurt!’