Everyone who knows you announces themselves repetitively before they come in the room with you as not to startle you...and even though I know it.....still I jump and scream.
"I'm coming down the hall, going to come in the room, don't want to scare you"...........<enters room> SCREAM!
"I'm coming down the hall, going to come in the room, don't want to scare you"...........<enters room> SCREAM!