[Honestly Vegeta hasn't figured out how he keeps setting things on fire, so he's going to go ahead and assume anything he does is doing it. But what if it's neutralized?]

This is what you're going to do. I can't touch this house without it setting ablaze. So we're going to use that water to put out any fire that I create in addition to giving it a little more power. Understand? [He looks over, analyzing on where to aim some powerful ki-wind gusts. Who knew he'd make use of that again.]

What I need you to do is just throw that water up in the air and I'll take care of the rest. Now get ready.