[the longer Goku talks to Aang, the more he realizes that despite all the drawbacks of this world and what the Malnosso were doing to people, seeing so many different techniques here...]

Hey if it's not too much to ask, Aang... You think you could show me how this airbending thing works some time? I'd love to see it in action!

[and so Goku can try to train in THAT too. silly Saiyan]