To have gained a large amount of weight. Typically observed when you see someone for the first time over an extended period.
"Far out bro, did you see how fatty fat Gav looked at the reunion? He has been on the pies like a mongrel"
by ShempNB81 October 14, 2009
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Pi is an irrational number (meaning the digits never end or have a repeating pattern) that is the ratio of the circumference of a circle to its diameter...this ratio is a constant for any circle, regardless of size.
by PY Love and Peace June 6, 2013
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Porn-Induced Erectile Dysfunction.
I found out about porn addiction and its consequences like PIED on this subreddit called NoFap
by josephisalive July 27, 2014
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To be ignored
I just got pied
Go ahead and pie me
by 69rat69 March 24, 2017
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A pie is a kilo of coke
"If u had pies then I woulda been heard of you, I prolly supply the guy thats been servin' you."

- Cassidy
by shylock holmes August 26, 2006
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"Pie it" is a phrase often used when an individual wishes to purposefully ignore a person or event.
1. Julia: "Hey did you go round to that girl's house?"

Andrew: "Nah I pied it."

2. Andrew: "Hey are you gonna ask Snape out?"

Julia: "Nah think I'm gonna pie it."
by pie it August 22, 2009
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pi is a mathematical constant whose value is the ratio of any circle's circumference to its diameter in Euclidean space; this is the same value as the ratio of a circle's area to the square of its radius.

pi is an irrational number, which means that its value cannot be expressed exactly as a fraction m/n, where m and n are integers. Consequently, its decimal representation never ends or repeats. It is also a transcendental number, which implies, among other things, that no finite sequence of algebraic operations on integers (powers, roots, sums, etc.) can be equal to its value.

The current record for the number of computed digits of pi is more than 2.5 trillion (10^12) digits. Completed on Aug 24, 2009, in Japan by the University of Tsukuba, it took the supercomputer system T2K Tsukuba almost 74 hours to calculate the 2‚576980‚370‚000 digits of pi.

I would paste the record number of pi here but it would take up over 2.5 terabytes of space (assuming each number is 1 byte) and I don't think Urban dictionary would appreciate that.
the reason the definition is titled under "pi !" instead of "pi" is cause all those fuckfaces posting definitions under "pi" copy/pasted a whole bunch of fucking numbers of pi that no one gives a shit about, and the long ass numbers have completely assfucked the whole page so the text scrolls sideways and you cant read anyone elses definitions
by Young Reezie December 13, 2009
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