Why is "Chop Cup" trending?

Wikipedia Overview

The cups and balls is a performance of magic with innumerable adaptations. Street gambling variations performed by conmen were known as Bunco Booths. A typical cups and balls routine includes many of the most fundamental effects of magic: the balls can vanish, appear, transpose, reappear and transform. Basic skills, such as misdirection, manual dexterity, sleight of hand, and audience management are also essential to most cups and balls routines. As a result, mastery of the cups and balls is considered by many as the litmus test of a magician's skill with gimmick style tricks. Magician John Mulholland wrote that Harry Houdini had expressed the opinion that no one could be considered an accomplished magician until he had mastered the cups and balls. Professor Hoffman called the cups and balls "the groundwork of all legerdemain".