In the second Harry Potter movie, Hagrid comes to the door slowly while carrying his crossbow only to see Harry and Ron under the invisibility cloak. Then afterwards he does the same only to reveal Dumbledore and Cornelius Fudge with the late entry of Lucius Malfoy. At first I assumed that it was for Lucius but that doesn't seem likely. Who or what was Hagrid expecting at his door?
My friend and I discussed this several days ago and I am happy to see someone has asked this question. Our first theory was that Hagrid was expecting the monster in which attacked other classmates. However, after some thought it seemed unlikely this 'monster' would travel outwit the castle to Hagrid's cottage and additionally to attack Hagrid who (to my knowledge) is not muggle-born or half & half. We concluded our discussion with the theory that he was expecting the people who appear at the door after harry and Ron; Fudge and Dumbledore who are accusing him of the second opening of the chamber of the secrets. When fudge says 'I'm sorry but Hagrid's record is against him' and then continue on to take Hagrid to Azkaban proves our theory.