a person who gives a lot of brain/head/blowjobs
Mary is a brain donor.
作者 stiff 2004年10月10日
Top Definition
Extremely stupid person, someone who acts as if they've already donated their brain to science--before they die. Clueless. Dumb as a rock.
OK, what brain donor thought it would be a good idea to leave beer in the freezer overnight??
作者 JJRtwu2009 2008年12月08日


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