1. States the position and momentum of a particle cannot be simultaneously measured with arbitrarily high precision. This is a crucial concept that is a part of quantum mechanics

2. The modern-day version states to never judge a girl's looks from a distance greater than or equal to 50 feet.
The uncertainty principle seems very straightforward.

Man, I was drunk last night at the party and the uncertainty principle totally slipped my mind. I swore he looked like a girl.
by PVD October 6, 2004
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It is okay to flake on plans with friends, or take sides in argument when those actions lead to getting booty
Matt: Damn dude, I know I said I would hang with you tonight but Megan called and...
Dave: Dude its cool, Booty Principle.
by Aetarac August 21, 2008
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The principle that people will rise to the level of their own incompetence. People get promoted by being good, but not when they're lousy at their job. The Peter Principle states that people will be promoted until they enter a job that they are no good at, and there they will stay forever.

That's why every career manager is terrible at his job.
Bob made middle manager thanks to the Peter Principle.
by suncrush January 2, 2006
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The idea that the more sex (and sexual partners) a person has had, the more crazy kinds of sex they have had.
-What do you think Kim has done?

-Well, she's had upwards of 100 sexual partners, so by the pornstar principle, probably at least anal.
by sdgflksadjngfsldjahfnwsldhfwja January 28, 2011
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Rule of life that states “Whatever you do that you think you are good at, there is a 5 year old Asian who can do it 1,000 times better”.
I thought I could play the concerto the best, but due to Lingling’s principle, I was outdone greatly.
by Meh1038 November 29, 2018
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The foremost rule of a brave, strong, and wise Commander in Chief:

Start no unnecessary war.
The Principal Principle of a great President, one who knows war or understands war and is dedicated to the safety and security of the American people, would be:

Start no unnecessary war.

This is basic, fundamental.
by RSD July 9, 2006
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a very specific rule governing the tipping for free drinks stating that the value of the tip given should be no less than half the combined value of the drinks.
The bartender gave him a free drink valued at four dollars so so he implemented the cahuenga principle and he left a two dollar tip.
by S Boss May 5, 2011
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