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Temporary hearing loss attributed to watching a low-quality, quiet video on YouTube with poor audio then switching to a video that is louder with better audio quality.

Usually only applies when the victim is wearing headphones due to the unexpected blast of sound that comes with switching videos.
Person 1: Oh man I cant hear anything right now. I was watching a quiet music video on YouTube and I switched to a loud one and it blew out my eardrums man!

Person 2: Yeah man that's called YouTube Deafness. It has happened to me too. Just wait a couple of minutes and it will clear right up.
by Anigav Senip July 27, 2010
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