A case of the Mondays - A state of being where you're too lazy to move, but also too

A state of being where you're too lazy to move, but also too angry to sit still. Usually happens on Monday mornings.

My coworker had a case of the Mondays and threw a stapler at the printer.

I texted my boss, 'I have the Mondays, and I'm not coming in.'

My little brother said he had the Mondays because he had to go to school.