A person who is knowingly deceived, but values the entertainment inherent in the deception enough to continue to be deceived.
Some smart marks like to see a face lose in shoot screwjobs.
by Japanese linguist February 26, 2015
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Losers with no lives, who do nothing but surf the internet all day.
That hermit down the block must be a smart mark.
by Plushtar February 18, 2004
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