Who hasn't seen the Keep Calm and Carry on propaganda poster's that the British Government put out during WW 2. Well this is the Dr.'s take on them because what the does the Dr. Do? Well he does not always keep calm but he does-Regenerate and carry on. And so it says on this shirt. With the 11th Dr's logo, the DW in the shape if the TARDIS followed by the words Regenerate and Carry on everyone will know you are a fan of THE Dr.