Nora Ephron claims her memory fails her in her new book “I Remember Nothing and Other Reflections.” She would be exaggerating. At 69, she’s still smart as a tack and funny, funny, funny.

“I was just writing things down in my computer, free associating,” says Ephron. “I had the title very early on. I’m a big one for titles. Needless to say, I don’t remember the exact process.”

In her follow-up to the hysterical book about women of a certain age, “I Feel Bad About My Neck,” Ephron muses about everyday topics from Teflon (she’s “sad” that it’s dangerous and gone) and going to the movies in Manhattan (not worth the $10.75).

There’s also more personal stuff — e.g., a morbid last installment, “What I Will Miss” (think fluffy: bacon, baths and waffles).

A familiar topic is touched on in “The D Word” (she and journalist Carl Bernstein split amid his affair with a family friend when Ephron was pregnant; the tale was famously retold in the book and movie “Heartburn).”

The screenwriter behind such great love stories as “When Harry Met Sally,” and “Sleepless in Seattle” is still a little cynical about relationships.

“I’m not saying all men cheat, I’m saying that people are constantly surprised that they do,” says Ephron, who is happily married to screenwriter Nick Pileggi (“Casino”). “It is sort of comical the amount of ‘Oh my God, not him!’ that goes on.”

Ephron is amazed that in the techno era that philanderers aren’t more careful.

“Technology is not good for cheating,” she says. “These guys don’t seem to understand they are secretly having their photographs taken by someone’s phone or their vital statistics Tweeted to 3,000 followers.”

So will computers be our downfall?

“It’s either that or bedbugs.”