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To verbally attack, using disparaging terms.
He.was.slag.ging.me.off.in.the.bar.so.I.beat.him.and.fucked.his.bitch.har.har.har.


YEAH YEAH YEAH
by Kung-Fu Jesus April 30, 2004
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The phrase 'slag off' is used in many ways, meaning somebody has been talking about you badly to another person
Jenny was slagging you off yesterday, she said you were ugly. She slag off me all the time
by Lovelykitten007 November 10, 2015
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Another term for "shut the fuck up" or "shut your fuckung mouth".
Jack was boulshitting all the day, so I asked him to slag off.
by Al April 10, 2005
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