One who prides him or herself on being a cesspool of useless information, and who will often inappropriately throw out random facts in normal conversation to appear more intelligent than they actually are - especially when they are misinformed but overly confident in their knowledge.

Often, a guru will ruin a joke by pointing out a flaw in logic or in facts, or will rattle off an excessive amount of information on a topic that nobody really cared about to begin with.

JH: I don't drink tea. It's unhealthy because it has caffeine in it.
Everyone: Thanks, GURU.

JH: George Harrison was important to The Beatles because he helped many other stars become popular, such as Eric Clapton.
Everyone: Gu. Ru.

Guru: Yeah man, Slow Ride is the theme to That 70's Show.
SG: What? No it isn't. Are you sure?
Guru: Yeah.
SG: How sure?
Guru: Like 100%. It's definitely the theme song.

guru by Beloved February 25, 2008

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guru

n. a junior associate in law firm whom others have deemed as being the expert on a given subject matter or area of law simply by virtue of having performed some research on the matter or small aspect thereof, which may have also resulted in a written memo.

Usually results in the newly-minted "expert" being given more assignments on the same subject matter, with the expectation that they will be easy tasks for the guru.

Partner/Sr. Associate: "Can you handle this assignment? I heard you're the office guru on _____."

The guru: "Uh.... sure."

guru by thelawislame January 15, 2009

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guru

Fat ass nerd who does nothing but serf the web

guru by Fusion September 19, 2003

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guru

Someone who used to be a geek but has been in the business way too long to still be one.

For lack of social skills, nerds never really get to the point of being gurus. Gurus are honored highly by geeks because they are an almost inifinite source of geek wisdom.

Linus Torvalds is a guru.

guru by elwood_j_blues July 31, 2006

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