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Thicc and blacker than the night sky.
That girl is so biso.
by daddybigb May 06, 2018
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An acronym originally standing for "Babson International Student Organization", which now refers to an international student usually from european or latin-american descent that is engaged in the international metropolitan lifestyle.
"The biso's all got a few tables at Rumor tonight, want to come?"
by Christan Hansonn February 07, 2008
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