It MUST on Saturday

It must rain or snow on Saturday. It must.

It must be miserable on that weekend you need comfort. It must.

There must be yardwork on Saturday. Or home repair. Or something long and boring and tedious and not... enjoyable.

Or -

The sun will shine. The day will be warm. Birds may even sing - after you have risen.

And you will have to go into work.

Because -

That's the way it MUST be on Saturday.