There's something a little of the "Tom Thumb" story here as "Doris" and "Roger" watch, somewhat sarcastically, their neighbours successfully have children whilst they remain a childless couple. That's not for the want of trying, but it takes some divine intervention and a crashing sound for them to find a new arrival wedged into their living room carpet. The dog's ejected from the house and the pair now embark on some heavily photographed parenting of a child who'd sooner eat the crockery than his peas (no bad thing?) and who likes to swim in the toilet bowl. It's clear that this kid is in…