My teacher is my mother's best friend

Back to School: Sahara returns to college and is late to register for Professor Mason's class. She visits him and Professor Mason quickly discovers that Professor Cavalli is Sahara's mother. He knew Sahara's mother because she used to date him and he could never forget the wild, passionate sex they had. Professor Mason is eager to find out whether the saying "Like mother, like daughter" is true or not.

My teacher is my mother's best friend