A typical British family has its first festive row at precisely 9.58 on Christmas morning.
(The presents have been unwrapped, overexcited children row with their parents, who are trying to tidy up the discarded wrapping and packaging material before rushing round trying to shove an oversized turkey into the oven. Arguments start about what to watch on TV and the average parent ends up losing it, and telling off their children for the first time by 11.07am.)