*SNAP*
I looked over my left shoulder and saw a Clapham dad staring at me, his toddler rolling around on the muddy ground in a Michelin-man suit, like a tortoise stuck on its back, a few feet from where - in stooping down to admire the snowdrops - I had just seen a used condom.
The twig was in my hand in a moment, almost before I had time to think about …