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2.
The art of performing sex without a partner, as air guitar is without a guitar. So in essence masturbation.
I flunked with the ladies last night and had to go home, watch some porn and perform air sex.

Ladies are ok but there is far less hassle with air sex.
by BDcoast January 08, 2013
 
1.
To illustrate the act of sex through body actions, much as one would illustrate the music of guitar through the actions of air guitar.

This is a new craze in Japan where there are many bacholars to couple ratio. Often seen there as a new sport and where championships do take place.
Man, Tim has proper good cock thrust, hes well good at air sex.
by Marc Innit March 31, 2007
 
3.
the instantaneous connection between two people upon first glance. could also be referred to as love at first sight but it much more intense as the air around you just feels orgasmic.
it was like in the movies, the slow motioned movements, the sudden dimming of the lights and then our eyes met, and for that's when it happened, air sex, yes, we'd just connected on a whole new level
by Dani Autumn February 02, 2011