Well, during last night's series finale, it happened again!
During an incredibly pivotal and tense scene in the episode, fans were quick to spot a modern plastic water bottle tucked behind the leg of Samwell Tarly, and again behind the leg of Ser Davos.
HBO wound up digitally removing the coffee cup from appearing in the episode. Chances are they'll probably do the same with the water bottle.
And that's definitely the biggest story from the series finale!
Via WFAA