When someone spills water into my laptop.
I'm seriously upset... I have nine people living in a house built for a family of four. I have one little space that is supposedly mine, next to the loveseat currently occupied by my eldest, who is sleeping in it, and everyone dumps their crap there.
Now, there's a sippy cup and a water cup there, and one of those must have been knocked over into my laptop bag, and my machine has water in it and won't turn on.
This was a $2,000 machine last year, I can get a refurb for $950 right now, and I don't have that kind of money just lying around.