It is immature to take back a gift.
Mike's birthday present to his brother is a trip to a football game together.
Mike wants to have fun at the football game.
Mike buys his brother's favorite food and drinks for the tailgate party before the game.
Mike meets a girl at the bar that night and decides to give her the ticket to the football game instead of his brother.
Mike's brother has a great time at the game and can't wait to hang out with Mike again.
Mike's brother is heartbroken and has the worst birthday ever.