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A common word used to describe someone who constantly steals food, Shaves your pubic hair and makes a beard out of it when u sleep, puts vodka in your milk or just any other ratty behavoir.
You just shat in my pillow case you "Rat"!

You had sexual intercourse with my sister you "Rat"!

Feel free to add your own.
by Phil Pickering October 22, 2006
an akaash who grasses up everyone
akaash is a rat in this school none like him
by s664 March 08, 2006
1.Some one who narks usually with the first name Tony and likes pasta
2.a defensless creature who lives in ghetto towns and feeds of old food
1.Hey Tony you rat now i have to kill you, you shouldn't have messed with the forelli family
2.hey look its a rat eatin our milk/cottage cheese let bust a cap in it's uglay grey ass
by TJ muenzie A.k.A Tigit/tito February 24, 2004
A woman's genitalia when viewed from behind when she's bending over.
TWO GUYS READING A PLAYBOY Dude, check out the RAT on HER!!
by ghost July 31, 2003
The misspelling and mispronunciation of the word "right" in the English language.
1. (adj.) Used to describe to what degree or with what speed something should be done.
2. (adv.) Correct or accurate.
1. Commere...RAT NOW DAMMIT!
2. If you don't get yo' homework rat, I'ma beat yo azz!
by GhettoPrincess March 08, 2003
Some that cant say their R's right and says (I'm gonna punch you in the face alot). It's someone also that is very stupid and looks at him self in the mirror all day and that has a permament flex
Chris leave me alone!......(Chris)I awwwta punch you in da face.
by Anonymous March 06, 2003
this definition solely gives an insight into the term 'rat' being used as a noun to address snitches, and how someone becomes a rat

what is snitchin and what the hell is a snitch?
- snitchin is when a person who informs an authority about someone else's PLAN to do sumtin illegal
- when someone tells any person with authority about something illegal someone else HAS DONE.
- in brief a rat (snitch) is the derogatory name for someone who 'tellz on othaz'
- HOWEVER! if you are gettin robbed and tell police u iz not a snitch! u only a snitch if- e.g. your neighbour gets robbed and you tell dem pigz who dun it!
- And dont think u r cool when u "tell 'em" coz trust me u iz definately neva gona b soulja boy

there are two fundamental pathways to becoming a rat

1) Variation of genes "genetic variation"

- Snitchin' can be a genetically inherited disease
- As Homo sapiens, humans are born with instincts.. it is our duty however to be responsible and not degrade ourselves to animals.
- With snitches it is clear that there is an approximate 3-to-1 ratio of rats to humans. Hence we can conclude that the 'snitch gene' is recessive and normal gene is dominant. Expressing these as letters we find R-normal and r-snitch
- If you have alleles RR then you are normal but if you have rr then you iz a snitch!
- If by chance you have the alleles Rr then you are heterozygous and a carrier for the syndrome and you children may be rats in the future
- This data is very difficult to obtain experimentally, this is mainly because humans take atleast 4-5 years to show first sings of snitchin', so therefore even if a successful test cross has been carried out the results will take long to analyse.. therefore just believe what im sayin' from street experience and my cambridge A-level Biology knowledge.

2) Environmental effect on variation
- just as some phenotypes such as height, weight and mass are polygenic (many genes code for them) , snitchin can also be to some degree inherited as a result to many environmental factors
- If your parents are Snitches it is most likely they will ask you to snitch about what happens at school. Then they will act to resolve any problems. This is however the first step that you are taking on your road to becoming a full grown rat. Ask people for advice, but try not to snitch so that someone gets in shit!
- your neighbourhood and the company you keep also affects your snitching habits e.g rapper cam'ron states on 60 minutes "wer i come from, we wernt raised to tell"
- try to make frends dat will last a lifetime and even wen they make a mistake look out for yo brothaz by not sayin shit to anyone

why should I stop snitchin' ?
- coz u will be called a rat, wraete, snitch, bitch and err otha ebonic insult u can tink ov !
- coz u iz jus bein' a fuckin' dick, and suckin pigs cockz
- once u iz a rat, it iz verry difficult for u to return to normal human society and trust is somethang u will neva hav especially if u hang round dope dealaz!

how to stop snitchin' and still save mah frendz life / house from bein robbed ?
- keep yo mouff shut!
- tell your frend that someone is gon get him, this method ensures that ur frend may take action and tell the police, however if you think u can 'save time' by tellin the police you are correct but then again it is wiser to take your time and avoid becoming a rat.
yeah giv me tha thumbzz upp fo' diz!
i cud get a phd in rat fo diz shit!
by youngKidzbattlefield October 11, 2007