A 26-year-old Australian man who rushed at Wicked star Ariana Grande during a premiere in Singapore has been sentenced to nine days' jail for public nuisance. He agreed with the prosecution that his act was premeditated, planned, and carried out intentionally to catch the attention of other people. How harmless are online pranks, and are we, the viewers, encouraging them? Daniel Martin discusses with Edson Tandoc Jr., President's Chair Professor of Communication Studies, NTU.