All this talk about practical jokes reminds me of one I heard about in high
school. It seems that a psychology class decided to give their new found
knowledge of the "power of suggestion" a little test. Some of the students
had another class together and decided to play a little trick on their teacher.
Whenever the teacher was on the left side of the room, they would act really
interested and when he was on the right side of the room, they would act really
bored. Well, it seems that this behavior did its job on the teachers sub-
conscious and he was practically crawling on the left wall by the end of class.
