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A person who uses foul language is said to have a Trucker Mouth or The mouth of a trucker.

There's also a rock band called Trucker Mouth.
I've got a trucker mouth and need to control my F-bombs better.
by Trucker Mouth March 30, 2008
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2
A lady who has sucked off so many truckers that their acid semen has rotted their gums and teeth down to almost nothing
In most British ladies who have trucker mouth
by The Original Trucker Mouth January 26, 2009
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3
The act of having someone poop into your mouth, for enjoyment, a prank or sexual gratification.
"Dude, you want a Trucker Mouth?"
by Dongie August 11, 2007
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