About this scene
Department store Christmas section, full holiday display, mid-evening. She's a curvy Latina redhead, mid-twenties, in jeans and a sweater. Picking out tree ornaments with both hands occupied. He flashes from the seasonal-end of the aisle. She turns around with an ornament in each hand, registers the angle, and laughs out loud once. The laugh is short and genuine. She does not put the ornaments down. She continues comparing them while watching him for another minute.
What to watch for
The laugh is the only audible reaction in the whole clip. It is real. Most public reactions get fake-laughed or muted. Hers comes out before she can suppress it. After that her face goes back to neutral and she does the comparing-ornaments thing for sixty more seconds. The ornaments themselves never get bought. She puts them back on the rack at the end and walks off without picking up anything else from the section.