Where a charge under s 316 of the Criminal Code (Qld) alleges administration of marijuana as a stupefying drug, expert evidence may be required to establish its stupefying effect (per majority; Fryberg J disagreed). Where corroboration warnings are given on sexual offence counts, the same warning should be given on a related count of administering a stupefying drug with intent to commit a sexual offence, particularly where the evidence is integrated across all counts.
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