chewing the gristle 

performing the act of cunnilingus on an ugly and/or obese woman.

masticating on a tough piece of beef or pork

severing the umbilical cord with teeth

"oh my dayz bruv, i know you aint fussy or nuttin' blood, but i can't believe you chewed the gristle of fat sam, you fuckin' skank!"

"oy chunky! Get your munting fat arse over here and let me chew your gristle, ya fat bitch"

"ha ha, you fuckin' wrong'n, i heard about you chewing the gristle of that unit from 'the log and cupcake'!"

chewing the gristle by Lord Crobfish July 28, 2009