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When your upstairs neighbor is moving furniture in such a way that you confuse it for thunder.

Sometimes, furniture thunder is so loud, that it is in fact mistaken for real thunder.
"Gary, did you hear that? Is that thunder I hear?"

"No Beth, that's Eric upstairs again. Just some late night furniture thunder."
by Medicus007 August 16, 2016
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2
When your upstairs neighbors are rearranging their furniture at random times throughout the day, so it sounds like thunder. Sometimes people actually mistake furniture thunder, for real thunder itself.
Honey, is there a thunderstorm outside?

No, it's just furniture thunder from Eric upstairs.
by Medicus007 September 23, 2016
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