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Are you talking about the rumbling sound you hear when you yawn with your mouth closed?
by tzahola 9y ago
Are you talking about the rumbling sound you hear when you yawn with your mouth closed?
- geoelectric 9y agoI don't really yawn with my mouth closed, but just tried mimicking it and yes, same sound as long as I tense the top of my jaw under my ears. It's more or less the same the same tone as closing your ears manually by pushing the tragus over the opening with your finger, but a bit louder for me.