The Post’s Steve Serby chatted this past week with the Yankees catcher:

Q: You’ve broken your nose twice and are catching with a torn tendon in your knee. Who’s tougher, you or your six-year-old son Jorge Jr. (craniosynostosis)?

A: My son (smiles). He’s gone through seven operations peeling the whole skin of his face down to nothing but bones. I can only imagine the pain he’s gone through. I don’t think there’s enough medicine out there to go through what he went through.

Q: He’ll need one more operation?

A: When he turns seven or eight.

Q: Is he a Yankee fan?

A: I asked him, “What if daddy plays with the Mets, or the Red Sox, or the Devil Rays? He said, ‘No, dad, I will always be a Yankee fan.'”

Q: How much pain are you in behind the plate?

A: (Laughs). I can’t even describe it.

It’s not important. I’m good enough to play.

Q: How do you block it out?

A: The game goes a lot faster when you think about what you’re trying to do to win instead of thinking about yourself.

Q: What have you learned catching Randy Johnson this season?

A: I misunderstood him a little last year.

Right now we’re on the same page.

Q: How did you misunderstand him?

A: If he wasn’t pitching good, I was taking that home, and it bothered me a lot. He’s our guy and I wanted to be out there for him, and we weren’t on the same page.

Q: What enabled you to get on the same page?

A: Communication.

Q: First impressions of Derek Jeter?

A: They told us our first pick was coming to Greensboro (N.C.), to play short that day. When he walked in the door I thought, “This cannot be the kid we drafted. If this is our first pick [laughs], our future’s not looking too good.” The way he wore the uniform, the way he wore his cleats, the way he wore the hat.

Q: How did he wear the hat?

A: Up. He left a little hair on the front. But then, when he went out there to play, I knew why they drafted this guy.

Q: You admired Don Mattingly growing up.

A: The eye black, scrubby face, sweaty, uniform dirty … just the way he hit.

Q: You e-mailed Roger Clemens last week before he signed with the Astros.

A: I said, “Whatever your decision is, we’re behind you. But your locker’s open here.”

Q: How did you handle Clemens?

A: I was a little intimidated at the beginning. The best way to get to Clemens was to pump him up.

When I was warming him up in the bullpen, I would fire the ball back really, really hard at his knees and he would just get really mad and look at me like a bull coming at me.

Q: What was it like catching David Wells’ perfect game?

A: He only shook me off twice, maybe three times. Toward the end, I got more nervous than he did.

Q: Catchers you admire?

A: (Mike) Piazza. Even when he was banged up, he hit .300 and 30 home runs almost every year. (Jason) Varitek. He’s very smart and goes out there no matter what. He’s always a gentleman, and I admire that. He plays the game right.

Q: Pedro Martinez is the toughest pitcher you’ve faced?

A: A proven winner. I’m not the only one who struggles against him.

Q: You played shortstop at Calhoun CC in Decatur, Ala.

A: If I knew what Decatur was, I probably would have gone somewhere else. But it was perfect because I went to a place that didn’t speak any Spanish, that didn’t know who I was. I went there because I didn’t want to be Jorge Posada’s son. I grew up really fast.

Q: You got into fights?

A: It was a little bit of a redneck town, and jealousy kinda took over.

Q: Best Yankee moment?

A: Being behind the plate when we won the 1999 World Series. Hugging Mariano, being on the bottom of that pile.

Q: Biggest thing you learned from Joe Girardi?

A: Don’t lose your job ’cause somebody’s working harder than you.

Q: Best piece of advice from Joe Torre?

A: Grind it.

Q: Best piece of advice from Yogi?

A: If you see a fork in the road, take it (laughs). No, make the game be fun.

Q: Your clubhouse fight with El Duque?

A: Just brothers being silly.

Q: Your Yankee legacy?

A: I would love to leave not with four World Series rings but with six, seven, eight.

Q: You’ve lived in Manhattan.

A: I love the city, love the people. I love when we’re going bad how they get on us, and when we’re going good how they embrace us.

Q: How did you propose to your wife, Laura?

A: We went to Ruth’s Chris in Puerto Rico. I got the ring and I told the waiter, when she orders dessert, to put it on the cheesecake.

Q: Favorite athlete outside baseball?

A: Michael Jordan.

Q: One person in history you’d like to meet?

A: Roberto Clemente. When you grow up in Puerto Rico you are reminded of him every time you play baseball. I’d have loved to have a conversation with him.

Q: Three dinner guests?

A: Muhammad Ali. Jackie Robinson. Clemente.

Q: Three wishes?

A: Health, health and health.

Q: Favorite movie?

A: “Scarface.”

Q: Favorite actor?

A: Pacino, DeNiro, DiCaprio.

Q: Favorite actress?

A: Julia Roberts.

Q: Favorite singer?

A: Marc Anthony.

Q: Favorite meal?

A: Rice and black beans, and steak with a lot of onions.

Q: Retire a Yankee?

A: I would love to.