The line comes from Back to the Future Part II, released in 1989 and set largely in an imagined 2015. Marty encounters a cinema promoting Jaws 19, and a huge holographic shark dives toward him before vanishing. His unimpressed reaction became a favourite quote among fans because the film itself was joking about sequel excess and effects spectacle. Clipped on its own, it spread on soundboards and in edits as a ready made review for any visual that fails to look real, long after the future date shown in the film has passed.