Trent Carroll at 2015-06-06 16:37:55:
Some off the top of my head:
A conversation between a white-collar and blue-collar worker.
A scene in which an everyday object is used in an unconventional way.
A scene where the characters are distracted but can't acknowledge the distraction.
A scene with a character who acts their age and another who clearly doesn't.
A conversation between two characters who both don't want to be there.