Scene From An Elevator

The Jamisons enter the elevator on the 17th Floor.
The elevator door closes.

Thomas yells 'aaaaaaaaaaaaaaaaahhhhh', runs to the back of the elevator, grabs the railing, and begins his gymnastics routine.
Jack attempts to ram the closed doors with his baby stroller. And again. And again.
Anna guards the elevator buttons, taking (loving) swipes at her brother's heads whenever they get close enough to threaten her absolute control.

The elevator door opens on the 6th Floor.
The young man and woman waiting to get on quickly assess the situation and decide they really need to go back to their apartment for something...