A day to remember tough situations in life are meant to be enjoyed in the moment and peaceful when over, like the sighting of a blue butterfly.

This day is every September 18th.
Carmela: "My relationship is causing me so much stress, I don't know what to do."

Emily: Maybe he's your blue butterfly; a rare experience that is only meant to be a lesson, not a forever.
Carmela: "What does that have to do with it?"

Emily: "It's National Blue Butterfly Day; do with that information as you will."
by BrunetteBeauty00 October 25, 2022
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The bleak feeling one gets in the middle of the week.
I got the Hump Day Blues. I feel like last weekend was so long ago, and this weekend is so far away!
by MrJuice November 20, 2019
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Blue T-Days are the two days in the week that start with "T" as in Tuesday and Thursday, those are the days you wear blue underwear or panties.
Girl:"What is today???"
Guy:"Hold on let me check." *glances down at their underwear real quick* "Tuesday or Thursday."
Girl:"Blue T-Days?"
Guy:"Yep."
Girl:"Oh."
by Dalyena September 10, 2015
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