1. A really awesome black and white movie made in 1998. Directed by Darren Aronofsky, director of Requiem for a Dream (which I didn't know till I looked it up just now). It's about a crazy math guy that is trying to predict the stock market, when his machine dies and spits out a number (which isn't pi). He believes the number is the key to understanding the universe and God. I don't want to give away what happens after that though.

2. Approximately 3.14. Used in math and such.
1.
Guy- "Have you seen Pi?"
LameGuy- "lol wats it bout? circles n such?!1 XD"
Guy- "It has angry Jewish people..."
Lameguy- "Awesome!"

2.
I read pi pages of the Iliad, then couldn't take the intense bordom anymore.
by Me April 20, 2005
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WHO's yet-to-be-approved 16th letter of the Greek alphabet as a politically correct label for the politically charged “Trumpvirus”—named after Trum-pi-sm—to avoid stigmatizing any right-wing inept head of state who failed to prevent millions of infections and thousands of deaths.
Diehard Trumpists and hardcore QAnonists have complained to the World Health Organization that Democrat lawmakers’ and US-unfriendly nations’ use of “Trumpvirus” is discriminatory or demeaning, so they suggested rechristening it to “Pi,” and proposed “Tau” for its twice deadly variant (B.6.28).
by MathPlus June 1, 2021
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A form of public political disagreement, throwing pies at a speaker.



Ralph Nader, Bill Gates, Bill Kristol and numerous others have been pied by people protesting them.

Videos can be found on Youtube, if you want to see them.
by prettybored4 December 24, 2008
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The ratio: circumfrence:diameter
"pi boy" you're pathetic. from memory: 3.1415926535897932384626433832795028 841971693993751058209749445923078164 062862089986280348253421170679821480 865132823066470938446095505822317258 111745029. seriously, from memory. seriously. i swear
by Bluquar September 17, 2006
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The correct way of spelling pie when doing math.
The area of a circle is ∏r^2; The radius of the pie squared.
by JHVH November 13, 2010
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