The most notorious out the trio (player, manwhore, walking sti), the term is a derogatory term for an extremely promiscuous man. The walking sti is literally what the name implies, as this subject will usually have slept with so many women that the odds of having contracted some type of sti are most likely very high. The complete opposite of the player, the walking sti values quantity over quantity. His reputation is usually bad among both males and females, and unless dramatic changes are made, will most likely never establish a meaningful relationship with women, as all he will want of them is sex. This term is best used for the select males who hook up with women for one night and then never speak to them again, or otherwise treat them poorly.
G1: OMG, WHY ISN'T BOB TALKING TO ME? I THOUGHT WE MADE A CONNECTION LAST NIGHT...
G2: No honey, Bob is a walking sti. You wont be hearing from him again, and you might also want to consider checking yourself out. There's no telling where he's been.
by nmns December 4, 2007
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A week-long event in Springfield College that differs for student and faculty; for faculty, it is a week-long ongoing 'carnival', with many activities; for students, it is a week-long drinking experience, in which it is tradition to become as fucked up as possible.
I can't wait for Sti-Yu-Ka, I'll be wasted for seven straight days!
by SCAlum April 10, 2008
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(1) One week in late April on the Springfield College campus when students combine efforts toward total self-destruction.
(2) The single reason that aforementioned "students" attend Springfield College in the first place.
STI-YU-KA 'til ya PU-KA
by SCpride April 22, 2006
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the car of a true champion, the mitsubishi lancer evo's BIGGEST AND ONLY archenemy.
ignorant bitch: does the STi come standard wit a V8? and the evo too?

Subaru WRX STi driver and/or Mitsubishi Evo driver: they're both 4 cylinder....

ignorant bitch: HOLY SHIT NO WAY
by maddah faggah November 28, 2009
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A hella beast car that is better than the piece of shit Mitsubishi Evo in all ways: looks (2007), speed (any year) and ralling (any year).
Hey dude did you see Travis Pastrana driving that Evo at the X-Games? Uhhh..no he couldnt have been because he is hella sick so he couldnt have been drving that piece of fucking shit Evo. He drives a Subaru WRX STi dumbass.
by Evosr4fags July 11, 2008
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Better than the Evo in any way. Anyday.
Moron in Mistubishi Lancer Evolution: God damn that Subie looks good. Looks faster than what I have. *sadface*

Smart guy in the Subaru WRX STi: I pity a fool in an Evo.
by SevenStarz June 11, 2012
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A faster and newer model of the U.S STi, used mostly in drag and rally sports.
DAMN SON MY s203 SMOKED UR BNR34
by scornobaby April 6, 2005
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