Ratchet n. A diva, mostly from urban cities and ghettos, that has reason to believe she is every man’s eye candy. Unfortunately, she’s wrong. –adj. Unkempt (clothes, hair, etc.)
This word is a horrific mispronunciation of the word ‘wretched’ and is used by young people to point out a peer’s (especially a female’s) flaws. It is very mean. Very, VERY mean.
My advice: Act like they are calling their peer something out of a toolbox. It’s much funnier that way.