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When a person yawns and starts a chain reaction, thus "sharing air." Also to the point where you return the air and the person that first engaged in the act is now the reciever.
Steve: (Yawn)
Fred: (Yawn) Da(yawn)nm you shared air. (a form of sharing air)
by Gwens_Faith May 18, 2009

Words related to Sharing Air

air flow chain reaction in your head shared air yawning