"He usually says, 'Kill 'em or hurt 'em.' That's what I always hear," Williams told The Buffalo News.
However, Williams took to Twitter to clear up Pettine's philosophy.
"The phrase "kill them" has never been said by Coach Pet or any of my coaches/teammates," Williams wrote. "I said it as figure of speech from "my perspective" not literally or any actual intention. Coach Pet has led us in an aggressive D since Day One. We've operated in a "beat them" mode this offseason w/a goal of mentally hurting the offense (future opponents) by being physical and disruuptive at the line of scrimmage & through any pass protection. Pressure, TFL, turnovers and sacks."