Giants playing with fire gambling on ferocious hitter

Brandon Meriweather Photo: Anthony J. CausiWhen Brandon Meriweather first arrived at the University of Miami, he was known as “Little B” because he was a freshman with no status. By the time he established himself as an enforcer on the football field his nickname had changed to “Killer B.”

“He literally would take people’s heads off,” said linebacker Jon Beason, who was a teammate of Meriweather’s at the U. “That’s the type of guy you want back there in the secondary.”

But it’s not necessarily the type of guy the NFL wants playing in its games these days. Meriweather, 31, was signed by the Giants on Sunday after injuries depleted the safety position. He arrives with the reputation of being…