It's good to surprise people for their birthdays
Bill is going to the birthday party of his friend, Jack, but he is too busy recently to shop for birthday gift.
Bill wants to celebrate Jack's birthday.
Bill asks his mother to make him a dog-like  costume, and he wears it to Jack's birthday.
Bill spends 15 minutes shopping and buys a regular T-shirt for Jack as a birthday gift.
Jack is impressed by Bill's costume and thanks Bill for his good idea.
Jack feels disappointed and does not react to the T-shirt  much.