File this titbit away in the memory bank for when you are next at the pub - clicking your fingers or waving your money around is a guaranteed way to be ignored by bartenders.
German researchers recently published a study on the best ways to attract the attention of bartenders at a busy pub.
Though barflies and regular clubgoers no doubt have their own set of time-honoured tricks for getting that bourbon and coke or cosmopolitan in a snappy fashion, the team from Bielefeld University proved the obvious: simple good manners go a long way.
"Customers successfully attracted the attention of the bartender by only being directly at the bar and looking at the bar," their report concluded, finding eye contact was one of the biggest factors in being served faster.
But this was not news to Illawarra bar staff.
"Someone smiling, with a nice look on their face, is what I look for," said Hotel Illawarra bartender Alissha Willis. "Tapping on the bar or calling out to get my attention, that's the worst thing to do. The next is someone throwing their money around. They would definitely get served last."
Chris Gibson, a barman at the Grand Hotel, agreed.
"There's a lot of things people do that annoy us, like clicking their fingers or whistling at us," he said.
On the flip side, both shared a few secrets to getting on a bartender's good side.
"Definitely just know what your order is before you get to the front, and tell me the spirit first then the mixer," Ms Willis said.
Mr Gibson said: "If you're rude, you might get served later.
"Be nice, be polite. And tipping does help."