To block someone from hitting more marijuana, usually mid-rotation on a piece or bleezy or spliff. Similiar to a cockblock.
Potblock scenario
Ronald was about to take his hit
Zackary says, "No I think you have had enough man." and sticks his hand in front of the piece, blunt, spliff.
What someone prevents you from making a potcontact because said person benefits from being the middleman/woman
Her cousin Dave keeps potblocking me from meeting the grower because he doesn't wanna give up his middle man fee or the extra $5 he charges you on top of the grower's $10/gram charge. Dave is an dickhole.
A West Perth-basedlocal (Aussie) slang for someone who runs a high revenue business and makes lots of money but is stingy when it comes to staff development and expenses.
Staff to Mr. CEO: Hey where are we going to have our annual celebration this year?
Mr. CEO: It’s going to be PotBlack cos I have allocated most of the budget for this year towards renovating my office!