NSW Police have been left "shaking their heads" over a risky gender reveal after a clip from the party was shared online.
It was meant to be the special moment two excited parents learnt the gender of their unborn baby.
But after choosing to discover the sex of their child with a car "burnout" — a dad-to-be ended up losing his car and putting the lives of others at risk.
A man's car was confiscated by NSW Police over the allegedly dangerous burnout in Silverdale, west of Sydney last Sunday, which saw blue smoke fill a quiet cul-de-sac.
While the blue meant the couple were having a boy, their neighbours seemed less than impressed by the noisy scenario — that completely blocked visibility in the street.
According to 7 News, police were left "shaking their heads" as a friend of the man "risked his life" capturing the moment on camera.
"He was invisible with the amount of smoke that was generated from the screeching of the tyres," Chief Inspector Stephen Blair told the outlet.
According to the report, the expectant parents had dropped a note through their neighbours letter box warning them of the dangerous celebration plans, that were watched from afar by family and friends.
In order to reveal the sex of the baby, a car will leave our driveway releasing the correct coloured smoke," it reportedly said.
But after shocked onlookers — thought to be from a neighbouring home — posted a video of the car wildly looping in the street, leaving skid marks on the road, police were alerted to the event.
Four people have been charged over the alleged dangerous incident and will face court in May.
NSW Police told news.com.au the driver had been charged with two counts of aggravated burnout.