its used as in somebody is getting loose, its a Victorian (Australian) hockey slang used to describe somebody who is uncontrollable/abusive/loose/loud while under the consuming of dangerous amounts of alcohol
i pulled a robbie diff last night...
by jamesgjbrown April 26, 2011
an individual who disregards all social norms and behaviours that are considered by the majority to be acceptable, respectable or appropriate; while demonstrating an exceptional tolerance to alcohol consumption and educating the masses on the numerous and unique ways that the C-Bomb can be inserted into a conversation
i pulled a robbie diff last night
by james.g.j.brown April 28, 2011

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