Quote #38 - 

Sokka: (In a strange, echoing voice) Drink cactus juice. It'll quench ya! Nothing's quenchier. (moves across the sand like an inch worm) It's the quenchiest!

(Katara takes the proffered cactus bowl and pours it to the ground.)

Katara: Okay, I think you've had enough.

Sokka: Who lit Toph on fire?