I generally cause them by blowing off the christmas family fag-together thing, every year my parents screech at me to go and every year i duck out, generally to a friend's house to hang with her xmas eve (her closest relative lives pretty far away and during high school she took me in during christmas eve just to get away and hang out with her, eventually it expanded to our whole friendgroup and even after graduation the tradition continues, we meet up at her place to drink and play smashbros all night every year even though we've been out of HS for 4 years now) then the next day EVERYBODY IS PISSED AT ME like somehow my absense ruined the entire fucking night, learn to party without me faggots i hate all of you.
As for actual BIG DISASTERS though when i was in Grade 11 my uncle died during christmas morning mass, i wasn't there obivously but the story is he fell face first into the holy water. The only thing I really REMEMBER about the entire incident is playing Super Mario 64DS during his funeral and getting pissed i couldn't get a star on Little Big Island.
Then the following easter my cousin died of diabetic shock, her family tried to call us and left a billion fucking messages on our machine in crazy sobs and screeches (it took me like 15 minutes to clear that shit off faggots :|) but we were all gone out that night, then I'm awake early the next morning goofing around in rpgmaker 2003 while playing a track from the RahXephon OST - the song itself is a slow and very sad violin piece and plays during a main character death in the show. So my uncle calls me and tells me to wake up my parents so I do, and he tells them, and soon enough my parents are standing around downstairs BAWLING THEIR EYES OUT while this super sad music plays in the background. It might seam heartless but I really had to hold back the laughter, the irony was set up so well :x
As for FUTURE EVENTS i'm actually kind of hoping my grandmother dies this christmas. She's been in the hospital for years and is an old rickety individual that lives in constant pain and sucks the time, energy, and money out of the family constantly, it's time for her to hurry up and GET GOIN'. Also I've had the same professor for the past 3 years now (though different classes) and over these three years i've used the "dead grandma" excuse twice already so if she actually DIES during the school year and I have to go back for the funeral I will be up the shit river without a paddle so if she dies during a school break it would be the PERFECT TIME!
why did you force me to think of that, you're evil