It's Zoe vs Leanne in the big gunge tank quiz. Leanne draws the short straw so starts in the gunge tank and gets an oozing of slime as the clocks ticks down, if she loses, she gets the full tank load. But, if she wins, Zoe will get gunged from a special secret gunge tank built into the ceiling of Messyworld, plus, have to swap places with Leanne in the gunge tank for a second load. Whoever is holding the tennis ball when the timer goes off gets an instant messy surprise.