"I’ll follow you. I’ll lead you about a round, Through a bog, through bush, through brake, through brier. Sometime a horse I’ll be, sometime a hound, A hog, a headless bear, sometime a fire, And neigh, and bark, and grunt, and roar, and burn, Like horse, hound, hog, bear, fire, at every turn."
Puck utters these lines after transforming Bottoms head into a that of an donkey. Puck indicates he’ll lead the craftsmen in circles through the forest, and that he’ll continue to frighten them by assuming various animal and inanimate forms. This inturn creates the effect humour.