"Have you decided," Bella inquires delicately, "what to break first?"
"Okay. Can you break things with your bare hands or should I go scrounging for instruments of blunt trauma?"
Ethan giggles. "Oh, scrounge for instruments, by all means, I can't imagine that making it any less fun."
Bella goes looking for the hammer. It takes her three minutes to find; the garage is kind of a mess.
She hands it over, and sits down, and flips her notebook open again.
Then, smirking, he takes the hammer to it.
He glances at Bella and asks, "How much damage should I do before he morphs again?"
"Morphing's tiring and we don't want him stuck - see if this makes it any harder, I think, then work up from there?"
"It's sure as hell distracting," says Trouble, beginning to morph. "Not that much harder, though..."
Bella watches his arm as he changes. "Note when during the morph it stops hurting, and if there are intermediate stages."
"Still hurts," he observes, although in fact the morph has yet to touch his damaged arm; it's going for the hair first, and Robin's brilliant green eyes. Then he shrinks, all of the barely-an-inch height difference, and his face begins to shift...
Trouble - to all appearances Robin - shrugs.
Bella writes this down, checks her timer, writes that down. "Takes longer than me morphing Andi. Seems relatively proportional to how big the changes you're making are."