Vaginal lips of a whore/slut that has been used and abused then hung out to dry. Very large labia that hang down (possibly inches) slightly pinkish and dark brown in color resembling that of sliced beef brisket. Commonly seen in most/all porno's.
John: "Hey man - I pulled this fine girls panties down the other night and she had wicked big brisket lips hanging there."
Bud: "Oh yeah- That means she's been around..was she a freak?"
John: "Hell yeah - I sucked em' and fucked em'."