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1.
A vernacular of casual English in textual or verbal form, blending highly grammatical English with technical jargon, 1337/l33tspeak, hip-hop lingo and pop culture quotes/references as an expression of self-referential hip irony among geeks.
W00tw00t!Hollaz to mah Gigga h0mi3z on da Techflizzo' (tor whose comraderie and support I am much obliged)! All your base are belong to the sysadmin!
 
2.

1. the technical jargon of dedicated computer users

2. slang used mainly on the internet
I am so sick of that geek speak.
by The Return of Light Joker October 11, 2007
 
3.
Using words and terminology that only geeks would understand. Generally refers to 1337/hax0r computer slang used by gamers, but also includes other exceptionally nerdy things like star trek, magic, DDR or LOTR.
1.(1337/hax0r) 1f u c4n r34d th1s u r3411y n33d t0 g37 l41d

2. So when we we playing DDR Kyle shouted "Qu'vatlh guy'cha b'aka!" and I'm like, hello, you can't shout Klingon curses during a DDR game!
by flameeverlasting May 12, 2005
 
4.
The 1337/hax0r language.
1 pwned j00, j00 n00b. W00t W00t!!!!

- Example of Geek Speak.
by Glittery Goddess June 13, 2004
 
5.
A conversation taken part in by nerds, or as commonly referred to, geeks.
Geek:According to my calculations..

Cool Person1:Woah! Quit with the geek speak you loser!
Cool Person2: Sheesh what a loser. Only a nerd can geek speak!
by miss greece September 09, 2008
 
6.
How now brown fire extinguisher.
Eat brick.
by Bastardized Bottomburp October 30, 2003
 
7.
Retard speak
Kids who use geek speak are most likely the same kids who get Ds and Fs in English class.
by normal October 31, 2003