Top Definition
A euphemism for marijuana. Instead of explicitly asking a random person for an illegal substance, it is used out of politeness and legal reasons.
Old hippy guy: Hey man... you got a brain-donor card?
Young dready: A brain-donor card? What the fuck is that?!
ayon kay Ryan Guide ika-09 ng Disyembre, 2007
5 Words related to brain-donor card

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