A Reulpser is a belch in German. This German engineer belches into a meter that reads decibel levels, and it comes out at an amazing 109 decibels. That sound is the equivalent level of noise as a running chain saw. Yahoo health says that regular exposure to noises that loud for more than one minute poses a risk of permanent hearing loss.
This gets a cool spinner for having a scientific measurement.
Click on the photo to see the video. 

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