When someone is smoking a joint, or weed, or marijuana, Zoot means the joint itself.
Gangsta A: Bruv I wanna bun a zoot

Gangsta B: Yeh I got some zoot here, take it

Gangsta A: Ah safe bruv, I owe ya one
by Weed Master March 12, 2012
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A zoot is weed so to bun it is to smoke it.
Person 1: "I'm bunning a zoot today"
Person 2: "Send me one, I beg."
by Sorksun November 9, 2017
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1) Can I smoke some of that particular weed please?
2) Can I buy some weed please?
Oi bruv, lemme bun the zoot.
by xx_stale_meme_lord_xx May 14, 2018
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