Yes, not "incredible" but I imagine if I had a dentist with a 'cutta' in my mouth I would rate it so, when I am sitting upright, drowsy(tired), I hear 'alien' whirring churning (like a grinder cutting teeth) loudly in my ears. I am not sure if it is audible externally but could be my wisdom teeth going astray (only 1 showed 2 yrs ago, dunno bout other 3) or some joint slippage??
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May not be related 
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