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 Justchilloutman November 18, 2021

by Architechnologi May 21, 2011

by jimbanner June 21, 2016

by 68nthensome January 24, 2019

A person with multiple diet restrictions, such gluten intolerance, nut allergies, poor methylation, lactose intolerance, etc., or who have adopted severely restricted diets, such as the Whole 30, the Keto Diet, the Paleo Diet, locavore diet, or other prescriptive eating plans. Origin: "Air ferns" are dead and dried hydrozoans that were popularized in the 1970s as low-maintenance house plants that required no food or water, only air.
It's impossible to plan a holiday dinner with all of the air ferns in my family; I can't cook a single dish that everyone can eat.
by AyKayAK May 14, 2018

by Antz1970 February 6, 2018
