In a college environment, a student's wardrobe is governed chiefly by the "5-day pants rule" (FDPR). The FDPR states that any student may wear the same pair of pants no longer than 5 consecutive days, after which they must change pants and shower. Most new college kids perceive this as excessive, and are new to the idea of not showering every day, but Sophomores and beyond know the need for this rule.
"Hey man, 5-day pants rule, and they've been rank since you spilled milk on day 3."

"Ahh, you're right. Better go change up."
by Justin Briggs 1984 October 23, 2006
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When a person has 5 days in the beginning of the Month of November

To ejaculate as much as they want. After the 5th day passes they can no longer ejaculate until the month of November passes
Diego ejaculated on the 4th month of November.....his still in the NNN 5 day rule
by Nate1238 November 2, 2023
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by YourLocalAsian September 3, 2022
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Commonly used phrase in Hypixel and Hypixel-related communities to represent something having an undetermined amount of time, that's likely to almost never happen or take a very long time.

It is said to have originated from the "Wizard Tower" of Hypixel SkyBlock where the NPC there has been replying with the dialogue: "Hmm...something appears to be broken. Give me 3-5 business days to fix!" for the past ~2.5 years and counting.
Friend: "When is x coming out?"
Me: "3-5 Business Days"
by Melancholy Cloud September 2, 2021
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That's how long it takes for your friend to respond
"Jane usually responds within 3 to 5 Business days but it could be even later in certain circumstances"
by Dev1325 August 8, 2023
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Your backpack on the school day when all of your classes meet.
Damn this day 5 backpack is so god damned heavy.
by APple36328394 June 9, 2009
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It's Fur-Day 4 but you have to speak "furry" e.g. "English" is pronounced/written as "Engwish"
Furry: It's fuw-day fiwve (fur-day 5) today!

Person: Ohw now
by Sauce-nowski December 23, 2020
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