In this corner: Toph Bei Fong's List of Nicknames.
Toph rarely calls people by their given names. If she's come up with a nickname, they're doomed to it forever. Below are the nicknames and who they're unfortunately associated with for ease of keeping track.

Aang: Twinkletoes
Zuko: Sparky
Katara: Sugar Queen, Sweetness
Azula: Crazy, Screwloose

[Cellphone Image goes here when I find one]
Voice | Video | Text
Text at your own discretion. Just because the phone can read it doesn't mean the owner can

"Hello? I'm supposed to say something about not being here and leaving a message. So do it, dunderhead, okay?"

( App goes here )