Bored to tears 

A combination of being both bored and tired, which commonly occurs during a boring ass class, and not enough sleep, also called being bored shitless.
Partying late on a Sunday, or just staying up at night on a school night batin or doing late homework can lead to this the next day in class.

Teacher:

Slope is calculated by measuring the height and the length of any part of the ramp. The slope is the. . .

Me: (stapling my eraser to form of a smiley face because i'm bored to tears)

Bored to tears by Boredhuh July 1, 2011

Bored To Tears 

A type of boredom characterized by so much yawning tears come out of your eyes

The teacher’s analysis of the blue curtains had me bored to tears

Bored To Tears by Sitbear September 4, 2018

Bored To Tears 

This is a brunch with your In-Laws on Superbowl Sunday (with no TV)that lasts until the Post-Game interviews.

I had brunch with my In-Laws last Superbowl Sunday talking about Sushi recipes and Wallpaper. Let me tell you I was Bored To Tears.

Bored To Tears by Mojo Maniac August 17, 2008