Mitt Romney and Rudy Giuliani exchanged numerous verbal spars over the weekend — just days before the two will meet face-to-face at the CNN/YouTube debate.

The bulk of the battle stemmed from Romney’s decision on Friday to call for the resignation of Massachusetts Superior Court Judge Kathe Tuttman — 20 months after he appointed her.

Giuliani, who was also in New Hampshire, told The Associated Press on Saturday, “the governor is going to have to explain his appointment and the judge is going to have to explain her decision.”

Romney shot back — making jabs at Giuliani’s judgment.

Romney pointed to his rival’s close friend and former New York police commissioner, Bernard Kerik, who is being indicted on multiple counts of corruption and fraud.

“It’s strange to have him bringing forward my selection of individuals to serve, judges and so forth, when he’s got Bernie Kerik all over him these days. When someone he knew was under investigation, he recommended to the president to be secretary of Homeland Security?… Throwing stones from a glass house is never a wise thing to do,” Romney said in an interview to be aired Monday on CNN’s “The Situation Room.”