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This phrase is used to describe the kind of excellent day or occurrence that deserves a banner hung in a prominent place in the home, as if to mark a celebratory occasion.
"I got his phone number and then he also said he wants to meet up later too! Banner day!"
by Mega Huge May 20, 2014
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May 18 Word of the Day
When you think up something brilliantly righteous while baked.
X: I had this great highdea last night
Y: You clearly were philosopher stoned.
by TripleWest September 03, 2012
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