Do you pounce on your pile of presents as soon as you wake up, wait until after a civilised breakfast or even leave the wrapping intact until after the Queen's speech?
Well, according to Richard Osman, presenter of TV quiz show Pointless, the time you open your presents reveals how posh you are.
He has a theory that what time you open your presents on Christmas Day, determines your social class. The later you open the gifts, the posher you are.
He tweeted: "The issue of class, of where we all fit, and the boundaries that separate one class from another, are so complex and multi-faceted. But, basically, it all boils down to this. The later you open your presents on Christmas Day, the more middle class you are. #Sociology"
And the tweet has clearly hit home, receiving more than 12k likes and nearly 2k retweets.
One user responded that they don't even open their presents until Boxing Day - therefore making them royalty.
Glamour Model, Nell McAndrew made famous for appearing on the covers of Maxim, FHM and Loaded magazines, responded by saying that her family opened their presents merely minutes after midnight, which prompted Richard Osman to respond: "You're my kind of scum."
Another Twitter user responded with a conundrum about their social class when one year they were made to spread out the gifts all the way until New Year's Eve.
Others thought this was an utterly torturous way to enjoy the festive period.
Former gymnast and TV presenter, Gabby Logan, revealed that her family opened their presents on Christmas Eve.
But the Pointless fact man thought that this made her 'upper' working class.
The question even conjured up difficult memories for one person.
They said they had since realised that their parents making them wait until after breakfast was practically considered child abuse.
They wrote: "We weren't allowed to open anything until after the adults had got up, had breakfast AND washed up, by which point the anticipation had slightly diminished somewhat.
"If I'd had kids, my parents would have been getting up at the same time as them or missing out - their choice.
"Should also say that when I told my boyfriend's parents about this, they considered it tantamount to child abuse!"
Someone made the very valid point that drinking can't commence until all the bottle shaped things are opened.
This seems like a rule that should be enforced across the land.
According to Richard Osman's theory, you are definitely not upper class if you are having a selection box for breakfast, but what else is there for breakfast on Christmas day?
