7x11 - Dragon Ball Z: Dragon Box

After Boo turns Bulma and the others into candy, and then proceeds to eat them, Gotenks becomes furious and launches into an attack on Boo! Kami's temple takes the brunt of the destruction as their battle unfolds. After Gotenks succeeds in trapping Boo with a barrage of his Super Donuts, he squeezes him down into the shape of a ball. He then begins to play a game of volleyball with Piccolo, using Boo as the ball!