(ratch, noun). The girl who thinks she's hot she's actually ugly and unflattering, probably being sloppy and obnoxious, and has a big attitude.
(rachet, adjective). Not on-point (clothes, hair, etc.)
You have fun singling out these girls and violating or shit talking about them, especially if you don't like her in particular.
Popularized by American waste-of-space (See: Rapper) Lil' Boosie in his song "Ratchet" in which Boozie, aka Torrence Hatch, describes many of the foul people he encountered in his underprivledged life before being incarcerated for drug possession. He is currently a drain on the American taxpayer.
The term Ratchet is now used in excess by dumb, middle-class, white girls in an attempt to escape their mundane lives by pretending to be in touch with "the Hood". These tween cum stains are under the impression that their generation has, yet again, created something new and hip. Little do they know, the term Ratched is merely the latest example of a high school drop out using a mixture of phonetics and ebonics to create cock-ups of legitimate English words.
These tween morons are exactly the type of nimrod that Lil' Boozie would have tried to sell codeine to outside of the local mall.
Bianca: "Jenny, you're white. Please stop trying to sound like some wretched Ghetto trash and use proper English. Thanks."
Gamer 2: But didn't Clank also help him?
Gamer 1: Yeah, he met him while fixing his ship.
"You like her? She ain't nothin' but a ratchet-ass hoodrat"