BT
Blessed Trinity Catholic High School a school designed to torture students with its draconian disciplinary system. See PDA for one of these rules. Uniforms must be impeccable and faculty often checks to ensure girls have the proper skirt length. Additionally, boys must wear socks of a certain height. These and many other Nazi like rules define BT.
Excuse me your skirt is too short! We don't allow that here at BT!
by Anonymous July 30, 2004

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BT
Big Tease - Often referred to someone that flirts with a bunch of people and does nothing to follow up with. This in turn can lead to people getting mad and disrespecting the BT.
Taylor G is a BT
by Riceay November 12, 2010

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BT
Bible Thumper - an extemely religious Christian that lives and breathes the Bible...and wants YOU to do so also.
That guy is such a BT; all he does is talk about church. And he's always trying to con me into going there with him!
by pugchief February 21, 2009

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BT
A Person with Big thighs, It may have cellulites and Thighs bigger than usual ordinary people
Hey Matt did u see that girl she got BT!
by Ryan cheng August 05, 2011

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BT
Drug refference to black tar heroin
wanna go smoke some BT.
by HawaiianHero November 07, 2006

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BT
BT is short for "Bian Tai" in Chinese.
Bian Tai used to mean homosexuality or someone is innormally addicted to something(esp violence & sex). But now it's widely used among youth like a tag for anything that looks too good or bad.
Tom adjusted the tint on TV so that all the people are green, and insisted:"I like it that way."
ppl:"You're too fucking BT."
by wangyang June 06, 2007

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BT
BT is abbreviated for Blue Tiger.

Often synonymous with being late or often not arriving at all.
He pulled a BT.
by Shakal-Master June 10, 2004

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