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1. Defined as the group of womes composed of the hottest girls you can find on a college campus.

2. Party chicks who get all the guys making the other greek chicks jealous, and single
Did you see those new pi phi pledges? They're fucking hot, just like the other pi phis!
by Spring of 05' January 11, 2005
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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any egregious acts such as trashing or vomiting in someone's house or in a public location that may ruin the night, the place or the persons life. (in some cases may incur one fines or lawsuits)
1:man chris puked all over and tore up my couch last night
2:yea man, he really pi-phi'd your house

1:you hear about those girls that pi-phi'd homecoming?
2:yea, they were a real class act.
by J.J. Cales May 28, 2010
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