Aang was ready to move and grab House by the arm if he had fallen, but luckily, balance was maintained. He smiled and playfully rolled the little air ball between his fingers. He wasn't showing off, honest.

(He was totally showing off.)

"Uh..." He paused, closing his fist on the air ball and allowing it to dissipate. "Well... I've never really tried doing it as hard as I could. The monks told me it could cause a lot of damage if I did. I could probably wear through rocks if I tried."