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2. boak
Slang for a very large quantity of marijuana; enough to substantially alter one's behavior. Different for each person.
"Oh man, I smoaked a boak last night and ate an entire pizza!"
1. boak
Scottish slang meaning vomit or feelings of excessive nausea.
"Gonnee put that tit away. Yer givin' me the boak" - Burney Nesbitt.