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A large, dimwitted, lumbering oaf of a person with lacking tact, intellectual prowess, and manual dexterity. As such, this half-human-half-baboon creature is unable to get out of it's own way.
Timmy, you silly lummox, you are entering a battle of wits half-armed!
Lummox by SuperMaing May 7, 2010
Related Words

lummifleeboster 

When an elderly person leaves their blinker on while on the freeway. The blinker remains on indefinitely.
Driver "Their blinker has been on for 5 miles now."

Passenger "oh, that is probably just a lummifleeboster."
lummifleeboster by Barking frog November 30, 2013
Rhonda is a total lummox. She was crossing the street while looking down at her smart phone. Now she is paralyzed from the neck down after getting hit by a car.
Lummox by Alucard the last April 28, 2019

jimminy lummox 

stimpy's conscience, who spend an episode as ren's conscience.. and beats ren over the head with a blunt object whenever ren hits stimpy.
ren: "you idiot!" (smacks stimpy)
*catchy whistle-tune plays in the background.. as a precursor to jimminy lummox clocking ren..*
BAM!!!
jimminy lummox by timpacalypse February 21, 2009
Derives from Scots dialect: A lummox is a large, gangly, lanky and useless waste of space. A poor excuse for a human being
Git oot o ma way ya useless lummox
A person with little Intelligence and/or common sense.
You big Lummox!
John couldn't put a 2 piece jigsaw puzzle together, he's a right Lummox!
You Lummox, why didn't you look before you crossed the road?
Lummox by Red October October 1, 2004