It's wrong to not respect traditions.
Sam's found out his Dad is having a birthday today and the whole family usually gets a cake for birthdays.
Sam wants to celebrate his Dads birthday.
Sam celebrates his Dad's birthday that night with a cake, and the family sings a song.
Sam celebrates his Dads birthday that night, although without a cake.
Sam and his Dad laugh and have a great time.
Sam's Dad feels unappreciated, and they have an argument.