Sometimes those explanations work better than words. But we're from the South Pole of our world, lots of ice and snow there for playing with otter penguins by penguin sledding on their backs.

[Oh yeah, Sokka's having "fun" on that coolest rollercoaster ride ever. Spoilers; he'll try it rarely and then he remembers why he doesn't go penguin sledding more often.]

... Hah, he's opinion on it is actually entirely different than mine, I guess. Most people, including me, think it's fun and relaxing and the penguins love playing like that too.