“False in one, false in all” is a jury instruction based on a simple, serrated premise: If a witness lies about one thing, jurors are free to assume that he or she lied about everything.

By this standard, federal Judge Brett Kavanaugh lied under oath in his testimony before the Senate Judiciary Committee. Whether the Supreme Court nominee is guilty of sexually assaulting Christine Blasey Ford, Ph.D., in 1982 is not clear and may never be resolved.

There is no question, however, that Kavanaugh lied to the committee under oath on national television. As I pointed out in my Sunday column, his straight-faced claims that “boofed” was a reference to flatulence, “Devil’s Triangle” was a drinking game and that “Ralph” was is a reference to his “weak stomach” were laughably false.

Drinking buddies of Kavanaugh at the time immediately refuted Kavanaugh’s downplaying his high-school and college drinking habits. Several times before the committee, he said he “liked beer.” Still does. His old pals swear Kavanaugh “liked beer” so much he often got sloppy, belligerently drunk. He also had a tendency to ralph.

Kavanaugh’s defenders dismiss his dissembling on these matters as trivial and too distant to count against him. He was a teenager then. He’s 53 now, and a celebrated jurist and family man.

OK, but now is when Kavanaugh lied under oath. Now. Right now. This man who wants to sit on the nation’s highest court lied under oath.

False in one, false in all.