Muffler lips

The result of smoking rocks and incurring 1st, 2nd, and/or 3rd degree burns on your lips; as if they've been placed on a hot muffler.
Crackhead Sally got muffler lips.
by WithaZ December 25, 2018
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muffler lip

Someone who smokes very heavilly - usually has very bad breath.
Their diet of coffee and cigarettes gave them a nasty case of muffler lip.
by Matt Plank September 29, 2006
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