How did the duck convinced the kangaroo ?
The duck told the Kangaroo that he gets bored sitting all day in the pond; therefore he requests the kangaroo to give him (duck) a ride on his (kangaroo) back, around the world. The Kangaroo raised an objection that the feet of Duck are unpleasantly wet and cold. Her feet might give him 'roo-Matiz' (rheumatic fever). The Duck replied that she has bought four pairs of socks to cover her feet and a cloak to cover her body in order to avert cold.