a gesture that resembles masturbation of male genitailia. usually performed by someone who is bored or disgusted.
I was so bored with what the instructor was saying, I did an air rub to my friend, Bruce, who was there, too.
by jimbanner June 20, 2016

by jimbanner June 21, 2016

by 68nthensome January 24, 2019

by Sammy Wood March 15, 2009

Not to be confused with a 'billionaire' (an individual that has amassed a personal net worth in excess of $1 billion), a billion-air is an incompetent buffoon, frequently identified by low IQ and high levels of narcissistic behavior, that has successfully turned a billion dollars into 'air'.
Showing his true ineptitude in every facet of being a good businessman or half way decent human, Donald has recently been exposed as a billion-air.
by timopheliac27 May 8, 2019

by TheSwampPiper September 7, 2020

by Ava-Nicole August 13, 2008
