Have you ever seen a movie so unremarkable that you accidentally started watching it a second time before you recalled having seen it once before?

This is particularly easy with certain sequels and prequels, in my opinion. The familiarity of the franchise covers briefly any sense of familiarity with the movie in question. Can you name one or more movies that you watched, but forgot until you started watching it again?
Have you ever seen a movie so unremarkable that you accidentally started watching it a second time before you recalled having seen it once before?
Have you ever seen a movie so unremarkable that you accidentally started watching it a second time before you recalled having seen it once before?
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