It may have looked like chaos from the outside, but at the Illawarra Master Builders Club on Thursday the two-up ran like rowdy clockwork.
A heaving mass of 600 people shared in the jubilant and lighthearted atmosphere, filling the club's upstairs function room.
By mid-afternoon the tip was tails and when the call rang out "tails it is", a roar erupted from the crowd.
The celebrations were cut short for some when the spinner flipped the kip skywards again and the boxer made the call - heads.
Builders Club general manager Andrew Bolt said punters enjoyed their annual two-up flutter.
"It's been great, we've had a good crowd," Mr Bolt said.
Legacy were well on their way to being the day's biggest winner, with the organisation collecting up to $4000 at the club by passing around a bucket.
Keith Murray of Windang makes the pilgrimage to the Builders Club every year, starting the day at the Port Kembla dawn service.
Wearing his grandfather's service medal and North Korea medal, Mr Murray has attended the dawn service every Anzac Day for 32 years, a tradition he hopes the next generation will follow.
"What I love seeing is all the young people who are here after going to the dawn service," he said.
"They need to be involved in the dawn service to know what this day is all about."