discussed Cited "see" Franklin v. Broyhill Furniture Industries Gainey v. North Carolina Dept. of Justice, 121 N.C.App. 253 , 257 n. 1, 465 S.E.2d 36 -40 (1996). [2] In determining whether the evidence is competent, we "must by definition apply those courtroom evidentiary rules and principles which embody the legal concept of `competence.'" Haponski v. Constructor's Inc., 87 N.C.App. 95, 97-98 , 360 S.E.2d 109, 110 (1987); see Johnson v. Charles Keck Logging, 121 N.C.App. 598 , 468 S.E.2d 420 (determining that blood alcohol test was incompetent evidence and could not support a finding of intoxication, in that there was "insufficient evidence to establish t…