We've all seen them, those films so bad they turn around into "good" films....TV Tropes has its own page,
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So Bad, It's Good - TV Tropes
Once in a while, a work turns out to be so bad, it creates a disruption in the badness continuum and wraps right around to good. Rather than it unintentionally Breaking the Fourth Wall like usual, something about the specifics of the work in …
Once in a while, a work turns out to be so bad, it creates a disruption in the badness continuum and wraps right around to good. Rather than it unintentionally Breaking the Fourth Wall like usual, something about the specifics of the work in question instead cause an enjoyable, though equally unintended, emotional response in the viewing public. Maybe the hubcap-on-a-wire flying saucers are cute, the spontaneous brothel scene goes on for so long it's hilarious, or the technically oriented find humor in the way the hacker can suborn the traffic lights of New York with no perceptible effort.
Whatever the reason, a truly horrid piece of work can become an unintentional riot and even get its own fandom for its very lack of quality. This can well be an ongoing process as attitudes change, budgets grow, and cynicism increases.