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a person who takes large ammounts of class A drugs, more specifically heroin. These people are easily recogniseable by the clothes that they wear and their stench due to them selling every possesion to get more heroin.
that lad is a bad scag head laaaa
by fatboy April 13, 2004
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Usually means somebody you don't like you refer to them as 'Scag heads'. Tramp, ugly, unpretty, nasty, unpleasant.
'Look at dat scag head over dere'
by *~*Bird*~* October 30, 2005
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