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When an absolute idiot thinks they understand something medical or health related and goes crazy explaining it over their social media. In reality they'll probably end up with mega-AIDS with their terrible ideas, so medsplainers are to be avoided and feared. Someone can be a medsplainer, can medsplain, or medsplaining.
My sister tried to medsplain to me that onions in my socks will cure cancer and now my stupid socks smell like onions.
by jerel89 January 02, 2018
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