Top Definition
A yawn that travels throughout the room and is able to affect everyone that notices the previous yawn which causes them to yawn as well.
Joe says, "Oh noessss, I'm about to yawn!"
His friend Jessie replies, "Oh damn, we're sitting in H&M with all these people around, a chain yawn might go off!"
by iLL iZZY April 06, 2008

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Yawning more than three times in a row. Chain-yawning had been known to continue for hours left untreated.
Strings made me fucking chain-yawn, motherfucker.. oh shit.. *yawn*
by inanity March 19, 2008

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