Pi.

Pronounced p-i, like pi. Again? P-EYE. It's short for PIOUS, although in the goody-goody sense. When someone is altruistic, you say they're pi.

First appeared in Enid Blyton's Malory Towers.
A: So they say that Cancers are always thinking of how to make life easier for others...
B: Oh, bitch, please.
A: And they say Cancers always love everybody, no matter what.
B: What the fuck? Are they even human?
A: And Cancers' primary focus is on the fam and taking care of those they love.
B: PI, PI, PI.
by finedoubter March 30, 2011
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pis

Pistol fire arm, very common among policemen
Where did the suspect get the pis? (law and order)
by Juan Ramos July 30, 2006
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PI

Phone Interceptor.

A person who is outside the phone conversation but constantly intercepts by commenting and asking questions in the background.

A constant phone spy. Like the number PI, they keep going and never stop.

IE: girlfriends, sisters and parents
Don't be such a PI. Wait until I get off the phone to fill you in on what's going on.

Can't talk now. I got a PI on my back.
by Chan Vu January 03, 2009
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pi

A complimentary word used to describe someone who is both hot and cool. You have the dude with a great personality, but average looks, and the chick who's sexy, but a bubblehead, and then you have someone who is 'pi' -- the best of both worlds. Stands for "Physically Impossible", since, technically speaking, nothing can be both hot and cool simultaneously.
gigglygurl: that Chad is sooo cool!
mistress_mammories: and sexy, 2!!!
gigglygurl: ya, he's pi!
by Adriel Kelsick April 26, 2007
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pi

1. 3.14159265358979323846264338327590...
2. A way to tell a math joke
3. An easy way to tell people that you are either a nerd, mutant, have a humongous head, was born with a birth defect, or just fucked up.
4. Whoever typed/spelled me is really (or somewhat) lazy.
1. I can recite pi. It's 3.14159265358979323846264338327590...
2. (Lame) Any of you want some pi?
3. OMG. That person just recited pi. Call 911!!!
4. Do you wnat blubery pi, pech pi, or stobery yogrt pi?
by Rand0mS7uff5 February 07, 2015
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pi pi dingo

a small to extremely massive male reproductive organ usually resembling an adolescent eggplant
my pi pi dingo is on fire, i knew i should have worn a dong bag when pleasuring that bar wench
by the egg plant person August 07, 2017
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PIS

PIS is an acronym for "pretty interesting shit". Please note this is an acronym because you actually pronounce it as "piss".
Marley:Hey, check out this Stephen Hawkings lecture! It's PIS!
Bob: Wow, I'm so glad I learned about wormholes! That was PIS!
by Spozzy January 07, 2011
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