It's 1.30am yesterday and a steady stream of youths stumble towards Hungry Jack's in Claremont, picking their way through empty containers, chips and the remnants of burgers strewn across the entrance.
Inside, ice-cream is smeared on the floor and lemonade drips from a spilt cup as staff frantically try to keep pace with orders.
After one too many nights spent cleaning up a trashed restaurant, management have decided to close the dining area, to the annoyance of some patrons.
Intoxicated men try to get past two security guards in the restaurant. But the "take-away only" rule seems to push the youths into the carpark, which is strewn with rubbish.
Security guard Gurpreet Singh explains that tonight has been quiet compared with usual Thursdays, when he often sees fights and food being thrown.
For him, and others who work at or frequent particular Perth nightspots, there is no need to look on YouTube to see West Australians behaving badly.
"They make a huge mess, they fight. There's usually drinks everywhere, blood, fighting, burgers everywhere," he said. "The staff at Hungry Jack's have to clean up after them - that's not their job. They shouldn't have to do that."
Claremont has long been a Thursday night haunt for students, who move from the Claremont Hotel to Club Bayview and invariably end up at nearby Hungry Jack's.
Mr Singh said many patrons were friendly, but others took it too far. As he speaks, a customer takes a huge scoop out of his ice-cream sundae and throws it at his friend, instead hitting the floor and the shoe of an unimpressed woman.
He laughs, mumbles something incoherently and walks out of the restaurant, smearing the ice-cream as he goes.
Claremont, Leederville and Fremantle have all developed a reputation for rowdy behaviour during the week.
On Wednesday night, when The Weekend West visited Leederville, police were keeping a close eye on hundreds of patrons.
At 5am the next day, evidence of the night before is everywhere. A car stands in a carpark with its windscreen smashed. Near the small bar The Good Shepherd, a smashed vodka bottle lies next to an empty pizza box. Wrappers and cigarette butts litter the streets.
Street sweepers face similar scenes in Leederville each Thursday morning after the stragglers have found their way home from the entertainment precinct's busiest midweek party night.
A video of a man confronting three badly behaved women at Innaloo McDonald's went viral this week, sparking WA Police Commissioner Karl O'Callaghan to say the man was "just reflecting broader frustrations in the community with determined drunkenness and bad-mannered behaviour".
Curtin University cultural studies professor Jon Stratton said disrespectful behaviour was becoming more common as young people's understanding of respect changed because of the way they were brought up.
"We have moved away from that kind of automatic respect where young people would have acknowledged that in a situation where there were adults around they would need to pull themselves together and behave," Professor Stratton said.
"Respect now is something that's earned, which means the context for respect is more complicated."
He said the video showed the impact of new technology.
"The ease with which someone can pick up their phone, take photographs or videos and immediately upload it to the web means that what previously would have gone virtually unnoticed suddenly can become an internet sensation," he said.