noun: a fink that is also a beaner.
verb: to beanfink somebody is to call them a beanfink, meaning that you're calling them both a beaner AND a fink
Me: Damn, that is one fine ass booty
Daniellay: I know, I grew it myself
Me: You must be a beanfink with an ass like that!
Daniellay: whatchoo talkin bout Willis?
Me: Well we already knew you were a fink, but with THAT badonkadonk, you MUST have some beaner in you