First day of a new school year. Teacher is taking the names of the new pupils.

First boy walks up to teacher's desk.
Teacher: What's your name boy?
1st Boy: Jules, Miss.
Teacher: Don't be silly. You can't use nicknames on the register. Your name is Julius.
1st Boy, walking off looking chastened: Yes, Miss.

Second boy approaches teacher's desk.
Teacher: What's your name?
2nd Boy, brightly: Billius, Miss!
...