The flag has been seen at the Scottish Cup game against Forfar last week, but it had it's Pittodrie debut at the game against Kilmarnock on Saturday.
The flag is in the style of the 'Keep Calm and Carry On' poster produced by the British government in 1939 during the beginning of the Second World War, intended to raise the morale of the British public in the event of invasion. The poster was rediscovered in 2000 and has become an internet meme and has been used as the decorative theme for a range of t-shirts, mugs and other products.
And a group of imaginative Dons fans including Aberdeen Mad forum regulars Theredpimpernel, Gallus79 and Paralysed_Sheep_83 have created a clever banner designed to persuade Icelandic star Kari Arnason to sign a new deal at Pittodrie.
The group even managed to persuade Aberdeen FC's security staff to allow the banner to be briefly draped from the Richard Donald stand - something that has been clamped down on for a number of seasons.
This is yet another example of Dons fans joining together to do something that adds to the AFC experience - more power to their elbows!
Aberdeen Mad - Together We Can Make A Difference