This prank was played in a shopping mall. An old man asked people to help him in reading the content written on an aquarium. Suddenly he started to cough badly and the other person has to tap his back so he could get relief. While coughing, his denture fell into the aquarium and he then asked his companion to take it out. And when they got a net to take the denture out, a hidden person push the shell upwards to frighten the person.
