Jordan Frost, 22, pleaded guilty in Warrnambool Magistrates' Court on Monday to offences, including stalking, breaching court-imposed orders and thefts, including snow dropping - stealing women's underwear.

He was ordered to undergo a psychiatric report and will be sentenced in December.

The court heard he stole pairs of underwear from a female's clothesline at her Warrnambool property on two occasions in April and early May this year.

The man and the victim were not known to each other.

Frost was charged with similar offences last year and was already on bail for driving disqualified and introducing methamphetamine into a police jail.

Lawyer Amanda Chambers said her client had "no expectation of being released (from jail) today or any time soon".

She said Mr Frost had previously served seven months' jail for similar offending against the same female victim.

She said Mr Frost claimed he would not recognise the victim if he walked past her in the street and he could not remember what he did with the underwear or why he stole it.

Mr Frost also pleaded guilty to supplying drugs to minors.

The court that on May 11, a 13-year-old female victim told police during a Video Audio Recorded Evidence (VARE) interview that Frost had on numerous occasions supplied her cannabis and methamphetamine, which she consumed.

Magistrate Mark Stratmann said the offending was "very odd" and "concerning".

Mr Frost has spent 101 days in custody on remand.

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