This is the polar opposite of John Lewis's heartwarming fantasy Christmas commercial. This is the real reason of the season for many adults: Bad, awkward, forced parties with friends and co-workers. Too much booze. Bad, awkward, forced sex. Best to be wearing a nice outfit for the shitty, freezing morning after, ladies. Or, you know, bring cab fare. The song is "Morning Has Broken". Ad agency: DDB London. Last year, Harvey Nics's holiday spot mocked Paris Hilton.