There is this great trick were a girl goes into a box and then a guy putts a big knife in the box and then divides the box in half. In other words the head part goes to the left and the rest of the body to the right. Does anyone know how people do that. i know people are not suppose to tell but, please i want to know because i hate watching something and not get it after. It is a great trick but, i wan to know the logic behind it so people tell me something about the trick and how it has originated. thank you to anyone who will give me a close answer or an answer to this question.