Spoke too soon
Have to go back to work tomorrow.
Some jerk off in some other country failed to meet a committed deadline. Hence, they're sending the files we needed today TOMORROW instead. Since eveyrone else in this freaking company wants to avoid a three day delay (which happens if they respect my time, and let me rest on the weekend), I have to come in tomorrow and work.

I tell you.
If I were a mutant...

..this company would be the first one to go.