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An intense amount of vibratory sensations in the mouth brought upon by many things including pop rocks & pop &/or alcohol, vibrators in the mouth, or certain bitchslaps.
I was eating pop-rocks and drinking rum lemonade and had a 7.2 mouthquake.

That pornstar is totally having a mouthquake right now.
by badluck13_7 May 13, 2011
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Apr 21 Word of the Day
I've been jabbed
by Francesco II March 20, 2021
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