His enthusiasm earns a raise of eyebrows, the second throw's plunk earning a quick snort of a laugh. She shakes her head before finding him another rock.

"It's different than that."

After giving him a rock, Mariko finds one for herself feeling out the motion for the throw before explaining it.

"You have to throw it sideways, like you're trying get it around something."

She makes a show of doing the throw in slow motion, arm sideways rather than the overhand throw from baseball.

"Get it?"