I WAS ONLY YOUNG WHEN I HEARD THIS BUT AT THE TIME IT WAS SHOCKING AND STUCK WITH ME SINCE:
On the Wu-Tang 36 Chambers the song M-E-T-H-O-D Man, at the start they say 'AND THEN I'M GONNA SAW YOUR ASSHOLE TOGETHER AND KEEP ON FEEDING YOU AND FEEDING YOU AND FEEDING YOU...'
:X