chatty rat 

A yr 7,8 or 9 that just hangs around chatswood, sydney aus. They try to be eshay by acting high or drunk and asking people for "darts" or "ciggys", also saying/screaming "oi" or "cunt". The girls generally wear trakkies, crop top showing there A cup tits or DDs and air forces or air maxes. The boys wear polo hats, trakkies, tommy t-shirt and weird ass nike shoes.

1) fuck looks there is chatty rat
'comes over and asks for a dart'
2) fuck off cunt
'runs away scared shitless'

chatty rat by erin_amy_milly_grdusters May 15, 2019

Chatt Rat 

A person who's hometown is Chattanooga, Tennessee. A Chatt Rat must be a boozehound. All Chatt Rat's must respect Chattanooga and surrounding area's. A Chatt Rat's phone number must also maintain their original 423 area code, even if they move locations. A Chatt Rat must be better than any other city in the state of Tennessee. They are champion drinkers and smokers. They must also be able to distribute even servings of a Chatt Town Beat Down.

If you aren't a Chatt Rat, get the fuck out of this bar.

Chatt Rat by PKA Boozehound Club October 20, 2010

Chattyfat

A flaming homosexual that talks way too much and is EXTREMELY obese

Daniel C. is a perfect example of a chattyfat

Chattyfat by Daniel Chuchmen August 11, 2008

Chatterati 

People who spend all their time online with social media, and are considered (or consider themselves) to be the experts on whatever the subject is that they are blathering on about.

Robert Scoble is a card-carrying member of the tech chatterati.

Chatterati by Wine Soaked August 4, 2011