You know the sort of horror movie where the suspense builds and builds and builds, partially collapsed at regular intervals by something jumping out and yelling “Boo!” whereupon the heroes have to flee, deeper into danger, and the tension rises and rises? You know how sometimes the director just doesn't know when to quit, and the bogeymen keep jumping out and yelling boo, the wobbly bridges keep on collapsing, the small arms fire keeps blowing out more windows in the office tower?
It's not like the tension goes away —it just get boring. Boring tension. You know that the climax is coming soon, that any minute now Our Hero will face down the archvillain and either kick his ass or have his ass kicked, the whole world riding on the outcome. You know that it will be satisfying, with much explosions and partial nudity. You know that afterward, Our Hero will retire to the space-bar and chill out and collect kisses from the love interest and that we'll all have a moment to get our adrenals back under control before the hand pops out of the grave and we all give a nervous jump and start eagerly anticipating the sequel.
You just wish it would happen already. You just wish that the little climaces could be taken as read, that the director would trust the audience to know that Our Hero really does wade through an entire ocean of shit en route to the final showdown.