What is air s*x,i never herd of that word before?

Question

well this happened during gym class & some guys were saying hi to me in the other side of the gym so i waved my hand back to say hi, & all of a sudden this guy in back of me saying: "are you having air s*x?"

i was like what??? NO! I was just waving my hand to say hi,what does that have to do with air s*x??? can any one tell me what air s*x is? cuz i have never herd of it before?

Answer 1

Thats so stupid!  Air s*x, I mean, not the question!  

Answer 2

Air s*x is a performance activity invented in Japan; clothed men simulate sexual activity with an invisible partner, often in an exaggerated manner, set to music, and in a competition before an audience. This is somewhat akin to playing air guitar, explaining the name. The creator, J-Taro Sugisaku, says that it was invented in Tokyo in 2006 by a group of bored men without girlfriends.

-Wikipedia