The defendant told police he had got home from work, put his clothes in the washing machine and while “in a rush” went outside to put the rubbish out while still naked.
He denied knowing anyone outside who might see him.
Cornes was granted diversion in 2021 for the same offence, Collin said.
Counsel Kieran Tohill said there had been “relevant previous offending” by the defendant in 2010.
There was also an attempt to address it through a Salvation Army positive-lifestyle programme, he said.
Judge Emma Smith told Cornes the charge carried a maximum sentence of three months in prison, and that was where he would end up if he continued offending.
“You can’t behave like this.
“It must’ve been distressing for this particular victim.
“Sometime, someone’s going to react very badly if you do this to them ... and they’re going to end up in trouble as well.”
She convicted the defendant and sentenced him to six months of supervision to enable intervention to “find out what’s actually going on”.
Cornes must also pay a $750 fine and court costs of $130.