Fresh mint, tight lint, you get trapped inside the monkey wrench

from RZA – Sickness - 74492 Lyrics on Rap Genius

Meaning

Monkey Wrench has two main meanings according to Wikipedia

meaning 1: The monkey wrench is an adjustable wrench, a later American development of eighteenth century English coach wrenches. It was popular in the nineteenth and early twentieth centuries but is now used only for heavier tasks, having been mostly replaced by the lighter and sleeker shifting adjustable.

Meaning 2: The term monkey wrench is also used colloquially (and mistakenly) to refer to the pipe wrench, owing to their broadly similar shapes.

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