Emily is a serious girl. She enjoys serious things like bird-watching, math, and playing the cello. But one day while she's taking a walk, Emily runs into Duck, who is anything but serious . . . 'Duck,' asked Emily. 'What are you wearing?' 'Socks!' yelled Duck. 'Ducks don't wear socks,' replied Emily seriously. 'Cold feet!' yelled Duck, and off he went. Through a series of humorous run-ins, Duck teaches Emily the importance of laughing - especially...