In State v. Smith, 279 N.C. 163, 165-67, 181 S.E.2d 458, 459-60 (1971), the Supreme Court ordered a new trial where the prosecutor: (1) claimed defendant lied about being at work the day of the crime despite evidence showing defendant was at work that day; (2) expressed personal opinions as to the defendant's guilt; (3) said a man who committed the acts against the victim was "lower than the bone belly of a cur dog." Id.