[Well, clearly this was much more complicated than bending really.]

Well in my world, we've got benders, people who can control the four elements! Not everyone can, but there's still a fair number. My sister is a waterbender, my friend Toph was an earthbender, Zuko's a firebender, and Aang's an airbender.

But Aang is special because he's the Avatar; that means he can control all four.

But even he can't boomerangbend like I can!

[It should be very clear that Sokka is totally making up that last one.]