The Whoabopop, also known as the Dodgeball Bat was a mystical Shen Gong Wu.
The Whoabopop was a light brown bat, with many red dodgeballs attached on the top of it.
When the Whoabopop was activated, it will scatter the balls attached and caused them to bounce everywhere endlessly. Because of this, it was a dangerous Shen Gong Wu for inexperienced users because the balls do not tell the difference between friend and foe.
In addition to ball scattering, the bat itself could also be used as a clubbing tool.