Top Definition
an absolute wanka of a person, even more extreme than being just a "tool" or a "big tool". being called a major tool is one of the worst things that can ever happen to you. if you do get called a major tool its best to hide under a rock.
johno: mate you are the biggest dickhead i've ever met
Greg: yeah well your stinky muff.
johno: shutup bro your a major tool!!
greg: you don't mean that
johno: be quite assclown, go hide under a rock
by champ, sugar August 09, 2006

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