jit 

Acronym for "Just In Time." A Technique used to boost the runtime performance of a computer.

That technician jit my computer for free.

jit by Harry Stotle January 16, 2008

jit 

From the world of bicycle racing, a jit is an acronym for "junior in training".
If you show up at a race and forget something imperative like say, helmet, front wheel, well you busted a JIT move , stupid jit!

Look at mikes legs, the boy can't shave 'em right, what a jit!

jit by Julian Hine June 22, 2004

Jit 

is someone that is younger than you, either male or female. they act younger;
look younger; in general ARE younger.
think they know everything that an older more exprienced mind does.

Senior: "This SAT is hard as a mothaf*cker!"

8th grader: "I know what you mean!?"

Senior: "Shut up you little JIT! You don't know sh*t about being a Senior or SAT's, so get your sh*t straight and stick to your 8th grade math, mkay?!"

8th grader: *Crys like a little JIT*

Jit by Vnastyy January 19, 2009

Jit 

Originated in Orlando
depends on how its used; It can mean
1)someone younger
and/or shorter than you
2)some one who is doing
childish things / a fuckin
LAME
3)get someones attention

1)lil sister: can you make me cereal
big bro: y cant you do it yourself
lil sis: i cant reach it
Big bro: your such a Jit

2)kid 1:look at that freshman playing tag
kid 2:What a fuckin Jit

3)kid 1:whats that freshman's name?
kid 2:i dont know
kid 1:ay Jit playin tag
fresman:what...

Jit by Young Prep February 27, 2009

Jit 

When you jizz and shit at the same time.

In extreme ecstasy or terror, many loose-sphinctered individuals will surrender control of their bodies jit all over themselves.

Jit by baddogbiscuit July 28, 2016

jit 

a small, annoying person. usually a child

she is such a jit

jit by mrs. stypayhoralikson July 18, 2012

Jit 

popular kid or good at sports and is a master at guessing

that jit over there

Jit by keke 34 February 2, 2018