Randy Moss says he’s “coming to tear somebody’s heads off, man”

In 1998, then-rookie Randy Moss nonchalantly vowed to come to the NFL and “rip it up.”  And he did. Now, a season after retiring, Moss has made a more colorful promise.  “I’m coming to tear somebody’s heads off, man,” Moss said in a compelling Monday night video session on Ustream, roughly 12 hours after using…