not quite sure what to call this, hence the title, but what i was thinking of is a mix of these two tropes. not quite as 'scare-inducing' as a cat scare, but it happens more often than a built-up reveal/unreveal.
the situation that made me think of this comes comes from Flight of the Navigator, a movie featuring a UFO. (i'm too young to remember the promotions, but i'm fairly certain the UFO/Alien/Max was hyped up just a bit)
in several scenes just in the beginning, we have:
- a silvery disk hovering against the city skyline.... it's a reflective frisbee.
- an ominous shadow slides over the crowd... just a blimp.
- a massive oval form materializes in the sky out of the gloom... a water tower.
something to play on audiences' expectations and sort of dash them.
if this is already existing somewhere, please link me in the correct direction. but i have no idea what it would be called so i'm having trouble looking for myself.