A "perfect storm"
When three dumb things happen at once and you get stuck with the worst day of your life. Like that book where the boat sank because the weather was messed up.
'My alarm didn’t go off, my coffee spilled, and my dog peed on the floor. That was a perfect storm!'
'I missed the bus, got locked out, and my phone died. A perfect storm.'
'My mom called, my dog bit me, and I got a flat tire. That was a perfect storm.'