It's called Earth Bending. Lots of people back home can do it. I just happen to be the best.

[Wait a second. Once what Maka says registers, the stance - and the rock - falls as Toph just gets an incredulous look on her face.]

This guy managed to survive long enough to have a kid, and doesn't even know how to fight!? Kid, I envy your mom. If she's strong enough to keep his scrawny butt from getting kicked, while having the patience to put up with him... she's stronger willed than I am.