A term pinned by american writer, Washington Irving. A synonym for depression.
Later used as the name of a genre of music.

So high that you pasted greening out, past the greenzone, INTO the bluezone. Blueing In. Anything trips you out in the blue zone.

Robert Johnson is The Father
Muddy Waters is The Son
Jimi Hendrix is The Holy Spirit

When an iMessage conversation you're having with someone you're interested in is really one sided so your blue text overwhelms her/his grey text.

1. sad 2. a color, as in the sky or oceans.

In Australian slang, 'blue':

1. Is a term used to address someone with red hair; or
2. Refers to a physical fight.

Being a blue means you are new/unexperienced player in a usually pay to win game. Mostly used on the discord bot named "slotbot" that is in about 120.3k servers.