In Inkwell Isle II (World 2), you'll want to go to the Run 'N Gun level
Funfair Fever, located because Baroness Von Bon Bon. Near the beginning of the level, you'll notice a trampoline with some high walls and balloons. Some of the balloons are pink and can be parried! As a pink balloon comes across, begin to parry and follow the balloon to get 6, 7, or even more parries in a row. Also, after this, go see the juggler in World 2 to be given a extra coin!