One of many part time jobs working my way through college was working at the Jester cafeteria. For Halloween one year not only did they have someone dressed as a witch in front of of kettle, they had a halloween prank. In the area where you took your trays after you ate, there was a big suprise. At the area was three holes to put your fork, knife, and spoon through the holes. One of the workers stood by the area. When someone was getting ready to put their silverware in the holes, they would tap on the counter. From underneath someone who had fake blood on their hand, put their hand through the hole. We had a lot of screams and laughs from this. One lady ran out of the cafeteria. I think she ran a sub 4 minute mile.