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29.
A person who drives really slow in the left lane.
"God, why can't this bumblefuck just move over?"
by Hazel September 25, 2004
 
30.
Combination of two phrases, the first being "Bumbling Idiot" and the second being "Fuck Up." Making the combined definition of the two: an individual who lacks coordination and social graces thus imparing them in such a way that their actions cause catastrophe.
Officer Number One: Did you see Johnson shoot that gun in fully automatic on the range and trip and take out a whole convoy on accident, I mean JESUS!
Officer Number Two: Yeah, what a damn Bumble Fuck.
by the13dead April 26, 2004
 
31.
To be/live in the middle of nowhere
Parker: Dude where the fuck are we?
Ryan: We're in bumble fuck!
by Bossmofo September 28, 2014