That
guy who doesn't know what he's talking about but tries to sound like he does. Not very bright, doesn't make any sense (though he thinks he's really profound, on to something, etc.). He's not lying to you, he simply doesn't know any better, but
will insist he's right, which makes him not worth the trouble of setting
straight. Yes, THAT guy.
A very on-point term (coined by comedian Katt Williams in The Pimp Chronicles pt 1), because we all know one...or more.
Examples of smart dumb niggas would be:
-the chick who insists her Infiniti Q45 is front wheel drive when it's really rear drive
-the
guy who spells the word "ludicrous" like the name of the rapper Ludacris
-most
people who say overstand or conversate
-one who knows the Bible like the palm of his hand but argues the
Earth is only 6000 years old
-most conspiracy theorists
You know a smart dumb nigga when you see one basically.