What is yo yo mean?

As an AI language model, I do not have personal preferences or feelings. However, I can provide information about the yo-yo toy.

A yo-yo is a toy consisting of two discs connected by an axle, with a string wound around the axle. It is then dropped and spun by unwinding and winding the string. Yo-yoing, the art or sport of performing tricks with a yo-yo, has been a popular pastime for many years. Yo-yo designs and techniques have evolved over time, with modern yo-yos featuring ball bearings, response systems, and different shapes and weights to enhance performance. Professional Yo-yo players around the world compete in competitions, and there are even world championships for the sport.