Mischief managed.

“Harry Potter” stars James and Oliver Phelps , who played the jokester twins Fred and George Weasley in all eight movies, revealed what they really think of the upcoming HBO TV show .

“I haven’t thought about it,” James, 39, told The Post.

The Phelps twins were promoting their Food Network show, “Harry Potter: Wizards of Baking,” which returns Nov. 2 (8 p.m) and also streams on HBO Max.

“We only know where everybody else knows,” James added. “It’s something not connected with us at all.”

When asked if they plan to watch the TV show, Oliver, 39, said, “I won’t know until I probably come closer to it.”

“We’ve always got that bond of being the first [cast] group together,” he explained. “Because when we were filming, we didn’t know how big it was going to be from

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