[Firo's survival instincts left over from his street days perk up at the mention of free food, but his pride overrides it.]

That's not a challenge, that's impossible! And I don't need you to feed me--I'm not a dog!

[He turns his attention to the ball of energy, then back at Vegeta. He didn't see a single hand signal or hear any spells that would have made that happen; he's sure if he did the same nothing would come from the simple gesture.]

...That tells me nothin'.