I’m late because I’m insane. This is when the late person being late does not negatively impact anyone else—like being late to a group hangout or a party. This is when the late person being late does negatively impact others—like being late to a two-person dinner or meeting or anything else that simply can’t start until the late party arrives. But that’s misunderstanding the entire second group, who, despite being consistently late, usually detest the concept of making other people wait. Finally, I’m late because I’m mad at myself.