1) the complete understanding and control of the element, air, to a point at which you are capable of moving or forming it at your mercy.
2) an abnormally strong sexual act driven my extreme desire
1) Let me be your Aang, and we will travel the world airbending.
2) I'm going to airbend the shit out of you.
the act of farting
"I just airbended"(another form of airbending)