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(n) What starts out as a standard yawn but as it nears the end the yawner continues using the same exhale to create an a-capellic performance.
Man am I tired. Yahhwwh.... aaaahhh..... laaaaa...... laaaaa! (Yawn-Opera)
by Taco17 June 28, 2007
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When you start to yawn and it turns into an opera-tic voice.
Dude, you must be tired. That was no regular yawn, that was yawnopera!
by Jenny Jimenez July 12, 2011
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