Finger snapping
In a pub, there was an impatient patron wanting to be served and he kept snapping his fingers at the female bartender to get some prompt service.
She felt somewhat offended by his finger snapping attitude, so she kept serving other patrons who were waiting before the impatient one.
Finally after all others had been served she went up to him and said,
"It's going to take a lot more to be served with you snapping your 2 fingers as it won't make me come any quicker."