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."
Girl One: "I was waxing my butthole."
Girl Two: "Damn! Didn't that burn?"
Supervisor: "Ya'll are ratchet! Get back to work!"
2) A character in the Transformers franchise. (Seriously?)
2) Ratchet can turn into an ambulance at will.