Maybe it was supposed to be more symbolic. ... Or maybe he just found it a pretty name, it could just be as easy as that. It doesn't mean you're exactly the same as the sky.

[ When he gets more fired up though.. she pauses for a moment, blinking at her journal in surprise. She didn't quite expect that kind of reaction, but.. well, it's so much like him all the same. Clearly she should just have gotten the monkey boy, it would have made her life a lot better. ]

... They're not here, Goku. Don't worry about it.