Keegan: Why do you have to be 18 to change your name?
Me: Because your parents picked the name they like, so they're the only ones who get to change it.
Keegan: But why can't I change my name?
Me: You aren't mature enough to pick a name.
Keegan: But why can't I change my name to "Spiny Norman"
Me: Spiny Norman is a silly name.
Keegan: No it's not, it's from Monty Python
Me: I rest my case