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From NCIS tv show agent Gibbs. Always carry a knife.

A rule worth knowing.
What if I get into something i can't get out of. ....

Rule 9 : always carry a knife, you can cut yourself out of anything.
rule 9 by nothing is real May 4, 2016
Related Words
There is no rule 11
Guy:..... Wait where is rule 11?
Guy 2: Rule 9
Rule 9 by Dr. Crowley January 24, 2010
If you are out riding in bad weather, it means you are a badass. Period.
The wind was howling and the rain bounding the tarmac, but a baddass bunch of rule 9ers carried on pedalling through the shitstorm that is the British summertime.
Rule 9 by AD828321 June 7, 2020

Rule of 9 

Everything written after 9 p.m. local standard time (emails, texts, Facebook messages, etc.) must be approved by an objective party in order to prevent the sender's potentially profound regret the following morning.
Example A
Mike: I still love her, man. That's it, I'm sending her a text right now to tell her.
Aaron: Whoa there. It's 11:30, the Rule of 9 is in effect. Hand over the iPhone.

Example B
Alison: My boss is such a bitch. I can't take it anymore, I'm sending in my resignation right now.
Jill: Rule of 9; back away from the laptop. You'll thank me in the morning.

The Rule of 9 

The Rule of 9 stems from the Famous comedic rule, the rule of three. stating comedy works best in threes ( i.e. the three stooges or when a joke is referred two three times. The Rule of 9 is when the rule of three is brought three times at three separate moments on the same day. The Rule of 9 cam only be referred to as an official rule of nine if

-the rule of three has already been established for the punchline

-the rule is brought up on 3 separate not forced genuinely comedic moments

the rule of 9 is a high guild of meta comedy only underneath the rule of 9 triple (or the rule of 27) which is when the rule of 9 has been brought up 3 times in one night. (this has never been accomplished
cade: bro miles is a comedy genius

lucas: yeah man i know he flawlessly pulled off the rule of 9
miles: wubba lubba dub dub
The Rule of 9 by slut4tld January 29, 2023

8 9 10 Rule 

Standard calling etiquette needed for morons who would otherwise call people at any hour of the day. Monday - Friday you don’t call someone before 8am, Saturday before 9am, or Sunday before 10am.
Bob was awakened by his cell phone ringing at 6:43am. It was his drunk buddy Dale returning Bob’s call from yesterday. Clearly Dale needed to enroll at phone etiquette school to understand the 8 9 10 rule.
8 9 10 Rule by Grant Rampus January 28, 2023
More from Urban Dictionary

piddlefart

verb. To waste time doing nothing.
Instead of doing my homework, I decided to piddlefart around for two hours.
piddlefart by Rene April 25, 2005
Word of the Day on October 9, 2026
anyone who succeeds in disgracing/over indulging themselves in the throws of clubland
28 hours and 4 clubs later, gurning for england but still refusing to go home - a total wrongun!!
wrongun by bevvers March 21, 2007
Word of the Day on October 8, 2026

square grouper

Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."
square grouper by slipsheet November 6, 2004
Word of the Day on October 7, 2026
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