1 definition by Stevo McGevo

Under heavily influence of drugs and/or alcohol.

Originated from the term 'Plastered', but replaced with the Australian proprietary eponym for plasterboard, being Gyprock, an Australian plasterboard company.
Stevo got was absolutely Gyprocked last night, he was laying on the floor by 12.
by Stevo McGevo January 18, 2017
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