e.g
Walking Dead - character has been use to the walkers for months, yet are still dumb enough to squeal, make sounds or drop things that have me almost screaming , stupid
Movies:
Horror movies - the chick that always screams and rather than run out of the house, away, stays there witing to be murdered
or the person being chased by the car on an empty road, runs straight along the road rather than running into the woods where the car won't be able to follow.