Thirdfirsting is the process of shifting from third person to first person vernacular, defying conventional norms, usually in the form of online social networking status posts (eg Facebook, Twitter, etc.)
"Brad Pitt is going to the mall because I need to get Angie a new stroller" is an example of thirdfirsting.
Thirstiest (root word: Thirsty): The slutiest of sluts, to be thirsty is to be in need of a baller or a male/female with money to quench your desires. Thirstiest is to be the creme de la creme of whores, in appearance and attitude... WATCH OUT FOR THESE HOES! LOL
Man I saw the #thirstiest chicks out downtown Detroit tonight WTF is goin on??