Co-worker: "Sorry to bother you - I know you're busy."
Me (hastily closing tabs on witches.town, Captain Awkward, Adventures_in_the_Northern_Wilderness.pdf, and the Traveller RPG wiki): "No, it's OK. I've got a couple of minutes."
(Apparently my unconscious talent for invisibility includes the ability to look furiously busy whenever I'm in front of a computer? Not that I'm complaining, mind you.)