Blue Side 

A blue side is a feeling of emptiness and sadness. An act of hopelessness. It can also be an example of depression.

Jerry: Bob, are you on the blue side again?

Bob: Just a little. ...

Blue Side by MinYoongieTrash May 26, 2018

blue side 

The feeling of longing for someone whom you can’t seem to have

Ren: Omg I think I love him but like...
Holly: blue side?

Ren: yep, blue side

blue side by catastrophe March 6, 2018

Keep the blue side up! 

Salutation; refers to the artificial horizon indicator on an aircraft instrument panel. Blue represents sky and black represents the ground. If the black side is up, this will not end well. Similar to truckers' salutation of "Keep it between the paint" and satirical theatrical salutation of "Break a leg."

Said to a spouce: "See ya later, honey; keep the blue side up!"
To a friend: "Remember to keep the blue side up!"

Keep the blue side up! by Melody Lawson August 28, 2008

south siders/blue 

the main shit all you chaps r just haters go drink some hater rade. u just jeoulous cuz we can conquer north cali and more u stupid ass BUSTERS

you all r haters

south siders/blue by yazmin January 13, 2004