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A cold or cough that is caught by sharing anything by lip with another man.
I took a drink of my Bro's beer and cought Bromonia.
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by TD009 January 09, 2018
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Often confused with the organic chemistry compound of the same name, a bromonium a person who is consistently a bro, short for brother. They're with you to the end, and aren't fake or dishonest with you. The second part of the word comes from harmonium, which is a pump organ that makes a very long, continuous sound using very little effort. A true bro is a bromonium, because they don't pretend to be a bro temporarily or only in certain situations.
Anthony is a true bromonium. He's with you to the end. But Robert? Not so much...
by Spidercrawler September 18, 2018
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