Thomas and Percy's Christmas Adventure


 * “What's a Santa Claus?" "Santa Claus is someone who drops presents down chimneys during Christmas time." "I wonder if..." "No! Chimneys, Percy! Not funnels!”
 * ―Percy and Thomas talking about Santa Claus in the UK version

Thomas and Percy's Christmas Adventure, retitled Thomas and Percy's Mountain Adventure in North American releases, is the twenty-sixth and final episode of the third series.