When generations of children gather together at Hogwarts:
James: Are you Evans and my son? ! I knew that Evans would fall in love with such a handsome and charming me.
Snape: Get out!
Lily: Get out!
Harry: This is how my dad and my mom get along? How on earth did they get married!
Sirius: You ran away from home and you actually want to go back.
Dumbledore: (stroking his beard and smiling kindly) It's better to be young~