I guess this means since the last time we saw these boys together, Lawrence arrived and brought snacks with him.
Gordon wants to be a pilot. Interestingly enough, so did Lynn Johnston, but she could not pass the pilot’s exam.
Mike says he might write or teach. Interestingly enough, (SPOILER THIS PART) those are the professions ultimately taken by Michael and Elizabeth.
Brian Enjo reminds us, once again, that he is an ethnic stereotype. This joke would not work today.
Finally, the boys are going to drop trash on the ground at the same time they are talking about cleaning up the environment. It would imply that they are mocking their own environmental statements or they really have no control over their actions and must litter no matter what their real opinions of littering are.