Impolite: This tall, thin gallerina with a vaguely defined European accent tapped my friend on the shoulder while he was watching one of the exhibition’s videos that required wearing headphones. She then lifted off his headphones and told him that the gallery was about to close.
Polite: Once I was asked to be the “guardian of the art” at an opening. The director remarked that the works on paper were fragile and some college kids would just come to the opening for the cheap wine, making him worried about drunk stumblers who would damage the art. And so there I was, standing bored in a corner waiting for some tipsy guy to get too close before I would tell him, very nicely through gritted teeth, to step back.