It's not okay to mess up things that are important.
Sam was a groomsman for his sister's wedding, but he didn't feel like wearing a suit.
Sam has to figure out what he's going to wear to the wedding.
Sam decides to wear the suit anyway for his sister.
Sam wears a polo shirt and jeans to his sister's wedding.
Sam's sister is happy that Sam wore a suit to her wedding even though he didn't want to.
Sam ruins his sister's day, and she is very mad at him.