Actually, several of them. There may have been a Grandpa in there as well.
Many people in academia are familiar with a wonderful little tongue-in-cheek study that was done to assess the probability of certain relatives dying at various times of the semester. It’s called the Dead Grandmother Problem. It was written up in research format and the findings seem to suggest that familial mortality is linked to challenging academic undertaking s such as exams. I might add that discussing troubling and controversial topics such as climate change may have the same overall effect. You can read that study here.