Walt Frazier opens up to The Post on life at 80, Knicks career and if retirement is in his future

Knicks legend, fashion icon and MSG color commentator Walt Frazier —the man known as “Clyde” — turned 80 years old Saturday.He takes a timeout for some birthday Q&A with Post columnist Steve Serby.Q: Why is it so hard for you to believe that you’re 80?A: I guess because my routines are still the same, I still try to work out three, four days a week and stay active, still traveling with the team.

… People will be saying, “Oh man, you look great!” but I know it just takes me all day to get to this point, man (laugh).”Q: They used to say life begins at 40.How about life begins at 80?A: That’s where I am.

I’m actually viewing life differently, it’s no longer about how long I live but also how I live.I’m in uncharted waters, not too many people can help me, like, “Tell me what’s going on here.” But I’m excited.

I’m still doing it, I’m still relevant, still with the team.But I just want to give back more.

I’m dedicated to giving back more of my time now, especially to kids, because the kids have always been there for me … the Garden of Dreams and my Walt Frazier Youth Foundation.I’m giving out my book [“Winning and Grinning”] at the games, so that’ll give me an entry into the schools — which I’ve been doing, talking with the kids about education, absent from drugs you can be what you want you to be.

You can be better than Clyde, you can do it, guys.Q: Sum up what life is like today for Walt “Clyde” Frazier.A: My life is … sweet.I can always say, “Who has it better than Clyde?” I still thank God.

Fifty years … I played in the greatest city in the world, I’ve played for one of the greatest teams in the greatest arena, the greatest fans.And I still have that adulation, wherever I go, people show me so much respect, and that’s why it’s so humbling for me, and wanting to help.

And I’d be an ingrate not to want to give back and help other people.I’m standing on the shoulders of so many peopl...