And I said it all and never get lock jaw

from Macklemore and Ryan Lewis (Ft. Buffalo Madonna & Macklemore) – Thin Line Lyrics on Rap Genius

Meaning

Trismus, also known as TMD, is colloquially referred to as “lockjaw”. It’s a condition where the mouth is unable to be opened, and is thus “locked”. Macklemore is saying he’s reiterated this message many times, yet he’s not ceased yet.

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