William looked disgruntled but didn't dare act tough. Supermarkets were beyond his realm of experience, and he didn't like taking risks in unfamiliar territory - at least not without testing the waters first.

He grabbed Sophia's arm and said fiercely, "You go first."

Sophia blinked, detecting the forced harshness in his tone, and could barely hold back her laughter.

She suppressed her smile and nudged William with her elbow.

"Don't worry, just ...