A term for someone who often swears profusely, uses vain or foul terminology, and inserts the "fuck" word into his syntax as often as possible. This results due to his/her immersion in a professional kitchen environment. Similar to "swearing like a sailor", "truckers mouth", "swear like a trucker", etc...
What the fuck Chuck? Hustle your sweet fuckin tits with that filet or I'll be on your lush ass like a priest on a fucking altar boy! Fucking MOVE asshole!
Jane never swore until she became a line cook. Now, after 2 years in the kitchen, she often calls her best friend a slack jawed fuck bag. Jane knows she has a classic case of "Chef's Mouth".