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an internet acronym which stands for Pee In Your Butt. This phrase originated on honda-tech.com in the general discussion and debate section. there is much debate as to whether the term was first put into practice by screen name temp or screen name chilly.
During the great honda-tech GDD myspace whore thread of 2006 many people wanted to tell the whore in question "i want to PIYB"
by Mr.E.G. May 28, 2006
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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2
"The act of urinating in someone's rectal cavity. The actual acronym being slang, meaning "Piss In Your Butt". By many, it is described to be the ultimate sexual feat, sometimes referred to as "fifth base".
The other day I piyb and from then on out, I knew we would have the greatest sex life imaginable.
by AUXreeeeeee June 05, 2007
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3
Pee In Your Butt

Drinking large sums of water and then urinating it into the asshole of someone else.
Excuse me, PIYB?
by www.caraudiolounge.com January 22, 2004
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