Imagine you are walking on a rope bridge located in between two hills. You are already too scared and praying to god to help you safely reach the other side. And all of a sudden, your friend comes running to you and shout “BOOO” at your ears. Horrible prank, isn’t it?
Now, you don’t want to miss this prank where people are being fooled high above the land with a cracking glass prank. This has to be mentioned that the bridge is itself made up of the glass and that is cracking.