You're a good catch with a shitty spouse, got a pretty mouth and a good jaw

from Eminem (Ft. Pink) – Won't Back Down Lyrics on Rap Genius

There is a fishing metaphor here, since fish are often caught by their mouths, but mostly Em is just explaining what he looks for in a woman

He’s talking to Mariah Carey: she’s a good catch with a shitty spouse (Nick Cannon)

Also, he looks for a woman with a sturdy chin and jaw for giving head

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