As an adjective, ratchet describes a person's behavior. It does not imply or insinuate a gender, race, or sexual preference. Plainly put, if someone says, "You are ratchet" they are saying you act like a fool, you have no manners, and you are ignorant in all forms of etiquette. A ratchet customer in a bar or restaurant will make ridiculous demands, they will flag a server down 100 times for stupid things, they chew with their mouths open, they make a huge mess on the table, they sit in someone's section for hours without buying anything (they will drink water and suck ice cubes instead), and they won't leave a dime because ratchets are notoriously cheap. They will also pluck one of their own hairs and drop it on their empty plate and then demand a refund for the food they ate.
Don't be ratchet!
Adjective: She was at least 250lbs and wearing a pair of yoga pants that said "Bootylicious" across the back. She is ratchet!
2)One who does things that are considered dirty,trashy,nasty and bitchy.
RATCHET is not positive. ususally women refer to other women as ratchet when a skirt is too short or a weave is resembling dust bunnies.
" Now i know yo RATCHET ass aint gon buy that 99 cent weave!"
"Imma beat this RATCHET hoe ass!"