Despite the very heavy load of homework that the fourth years had been given for the holidays. Harry was in no mood to work when term ended, and spent the week leading up to Christmas enjoying himself as fully as possible along with everyone else. Gryffindor Tower was hardly less crowded now than during term-time; it seemed to have shrunk slightly too, as its inhabitants were being so much rowdier than usual. Fred and George had had a great success with their Canary Creams, and for the first couple of days of the holidays, people kept bursting into feather all over the place. Before long, however, all the Gryffindors had learned to treat food anybody else offered them with extreme caution, in case it had a Canary Cream concealed in the center, and George confided to Harry that he and Fred were now working on developing something else. Harry made a mental note never to accept so much as a crisp from Fred and George in future. He still hadn't forgotten Dudley and the Ton-Tongue Toffee.