The Curse of Monkey Island Tips:
      When you think you're absolutely stuck, which can happen, what you have to do is talk
      to everybody you can about all relevant topics, and look at and try to pick up every
      object, even if it seems like Guybrush won't do it. And then use every object with every
      other object in your inventory, and elsewhere, as well as other people. While doing this,
      you should, at the very least, pick up a clue somewhere along the line. More often than
      not the solution is already in your possession.                                                                      Run Home                  Run Back