1 definition by Nadezka Brazil et alli

A "boondao" (in portuguese = bundão) is a freeking & fucking idiot.
It derivates from "bundo", an african language and ethnic group from Angola; because women in this group have a big behind people in Brazil started to use this word to refer to this part of the body.
George is a big boondao.
by Nadezka Brazil et alli May 13, 2006
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