Andrew McCarthy looks back, with rue and hard-won wisdom, at his 1980s Brat Pack days in new memoir, “Brat: An ‘80s Story.”.

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Misspent youth is a sure seed of nostalgia, and when it comes to the 1980s, living vicariously through the excesses of the so-called Brat Pack was a good way to make memories without getting too messed up.

In his new memoir, “Brat: An ‘80s Story” (Grand Central, 240 pp., ★★★ out of four), Andrew McCarthy looks back, with rue and hard-won wisdom, at being there.

McCarthy was, after all, the thoughtful, angel-faced brat of the unruly pack.

It included Molly Ringwald, Rob Lowe, Emilio Estevez, Demi Moore, Judd Nelson and others, all inhabiting such John Hughes teen dramedies as “Pretty in Pink” and “The Breakfast Club,” as well as more operatic fare like “St.

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Left to right: Andrew McCarthy, Emilio Estevez, Judd Nelson and Rob Lowe as they appeared in the 1985 film "St

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