Noun. 1) In a global set consisting of a multitude of binary experiments, each with only two outcomes; pass or fail, Lis refers to a rate of success of no less than 8 standard deviations above the mean.

A favorable statistical anomaly

Adj. 2) A shockingly overwhelming appeal to the bodily sense of taste or smell, usually associated with an incredibly rare and exquisite gastronomic event.

Verb. 3) To observe something so perfectly beautiful that life in general, even in its most revered and sacred moments, becomes pale and dull by comparison.
1) “Have the new quality control process implementations at the nuclear facility proved to be as advantageous as envisioned?”
“Absolutely, the probability of not having a core meltdown has increased to greater than (1 - Lis).”

2)“The laboratory replication of the late Auguste Escoffier’s signature dish was so decadent to the senses, the experience was approaching Lis.”

3)“today I Lis, Tomorrow I die.”
by TeamRedBalloons March 11, 2011
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A word shouted in disbelief responding to a statement which can not possibly be false or which has already been agreed upon. Often used in "Invader Zim", an animated television show.
A: I specifically remember taking it with me when I got out of the car...
B: It's not in the car.
A: LIES!!
by J Dogg October 15, 2003
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AOL instant messanger slang.

How many times a day do you typically type the word "lol" when you are not actually laughing out loud? Even if you do this once, you are a liar, you're lying to yourself, and to your friends who think they've made you laugh.

Instead, be true to yourself and your friends, and type "li" which means you are laughing on the inside, and that's all your friends need to hear to know that they still have a half decent sense of humor
friend: why is 6 afraid of 7?

me: I don't know

friend: because 7 8 9!

Me: li
by Brian H January 25, 2005
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Something said when you disagree with what happened.
Jebus was railed by RevStan.
Jebus: Lies!
by RevStan January 8, 2004
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Please respect these lies (but we all know they won't)
by Timeee265 April 14, 2009
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A word shouted in disbelief after a shocking statement, in thinking that this statement is a lie.
Joey: I killed spongebob.
Alex: Lies!
by oh happy days! June 29, 2009
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