Top definition
The inability to stop ideas from exiting one's mouth the second they enter one's head.
professor - "So the position of each word in the string carries meaning. It's kind of like... did anyone ever diagram sentences in English class?"

random student - "That reminds me! I've always wanted to learn shorthand. Does anyone know a good book about learning shorthand?"

students trying to learn - "Another class derailed by explosive idearrhea."
by organizer1 December 01, 2008
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Jul 15 Word of the Day
The safeguarding of Earth and other worlds from biological cross-contamination (i.e. billionaires with too much time on their hands).

Also known as “planetary protection.” Planetary protection / quarantine “reflects both the unknown nature of the space environment and the desire of the scientific community to preserve the pristine nature of celestial bodies until they can be studied in detail.”

There are two types of interplanetary contamination. Forward contamination is the transfer of viable organisms from Earth to another celestial body. Back contamination is the transfer of extraterrestrial organisms, if such exist, back to the Earth's biosphere.
Billionaires are having a dick swinging space race while the earth experiences record breaking heatwaves that cause sea creatures to literally cook inside their shells. We need planetary quarantine.
by monkeylabor July 14, 2021
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2
A condition resulting in the excessive and unstoppable flow of ideas, usually in regards to being a student in a Masters of Architecture program and being struck by inspiration.
David jumped excitedly from his chair exclaming "wow, I'm just vomiting ideas today!"
"Sounds like a case of explosive idearrhea to me!" said Collin.
by CMW October 08, 2003
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3
When somebody has a bad or shitty idea, it is considered idearrhea.
That guy has nothing but bad ideas. Such idearrhea, I tell you.
by bluzebrother11 May 29, 2014
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