Swing Wildly is an expression that can be used to describe a wide range of activities. The term can be used to describe physical activities such as flailing, which is defined as moving the arms and legs in an uncontrolled manner, or yoyo-ing, which is the act of playing with a toy consisting of an axle connected to two disks, and a string looped around the axle. Both activities involve a lot of movement and can be seen as a form of wild swinging.