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the sound associated with the reverberations of the anus while releasing mecrob. Not to be confused with farting, only occurs after anal, known to be a terrible and thunderous noise.

"What was that???" "Is is raining?"

"No, that was random beasts humping, the female was plowed very well by large penis, as opposed to not so well by small penis and thus cunderthundt."

2. As Mason was leaving the bathroom stall, the man in the stall next to him let out a mighty cunderthundt that shook the bathroom fixtures.
by benijoer. May 19, 2009
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