The mind is liable to wander when you’re in a confined space for a prolonged period of time. Where does it wander to, unfortunately? YouTube. Or, worse, BuzzFeed (though the website seems quite passé at this juncture).
And yet, even though you know you’re inevitably always going to get caught watching the worst possible, most embarrassing thing (e.g. a Taylor Swift video–porn would somehow seem more dignified), you can’t stop yourself from getting sucked into the YouTube k-hole. If your boss has any sense as he or she comes up quietly behind you, he or she will have the decency to simply ignore your frantic closure of every non-work related window you have up at the moment. But then, that’s somewhat antithetical to the attributes required for being in management.