Vegeta: Well that wasn't exactly necessary. Because I'm going to keep the Dream Fountain sealed in this. *Sucks Dream Fountain back into box*

Goku: So what do we do now?

Vegeta: Well after I destroy Nightmare's ship, I'm going to put this thing on isolation, so it can never be opened again. Basically making it nonoperational. And sealing it into something only I could ever get to.