A "Grim Rainbow" is a term used to describe following a trail which leads to something ultimately pointless, dark, and oftentimes insulting. To follow a Grim Rainbow is to suffer humiliation, and defeat, many times over.

If you believe a Grim Rainbow, then you are suffering from a sad delusion.
"Dude, hearing that Brian Blessed died, only to discover it was a sick joke made me believe in a Grim Rainbow"
by Fire Guardian April 06, 2006
7 Words related to Grim Rainbow

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.