A negro. The root of this word comes from the character Bubba on Sanford and Son.
"Hey, Bubba Head - what are you doin'?!"
by Harry Hoodeeni September 06, 2006
Southern, being named after Bubba, doing Bubba things. Still wears a mullet, etc.
Dude, you know Tommy didn't get no further than 6th grade, he's such a Bubbahead.
by evangaline58 November 04, 2010