Turned in for turn-ons

These fetishes got people into trouble with the law:

Wallets/smell of leather (2013)

A serial thief with a fetish for sniffing women's leather wallets was jailed for 13 months after a judge decided he had already been given enough chances to mend his ways.

The 48-year-old also took upskirt pictures of a woman bending over in a toy store.

The man, who becomes sexually aroused by the smell of leather, has been in and out of jail since 1986, spending a total of 16 years behind bars.

He was spared prison in May 2011 when he was placed on probation due to his psychiatric disorder.

But he breached the order repeatedly, stealing and insulting a woman's modesty.

Urine and faeces (2011)

A sales representative, 31, walked by two kindergartens and feeling sexually aroused, entered the premises.

There, he wrote down on a whiteboard his fantasies involving girls, urine and faeces.

A few months later, he went into a child care centre and headed for the toilet, expecting to find improperly disposed diapers, with which he would fantasise and masturbate.

He found several used diapers, which he took with him, smearing their contents on the walls of the childcare centre.

The man had previous convictions for committing obscene acts, outraging the modesty of a five-year-old girl and criminal trespass.

Taking into account two other charges, the judge sentenced him to six months' jail and fined him $2,500.

Motorbikes (2011)

A 48-year-old, who gets sexual pleasure from riding motorbikes belonging to others, was caught stealing an $8,700 bike at Marina Bay Sands.

He was diagnosed with the fetish more than 20 years ago, and it has landed him in jail at least three times.

He was again arrested after a bike owner's brother spotted the motorcycle in a carpark on Seah Im Road.

A psychiatrist from the Institute of Mental Health found he was suffering from depression and paraphilia, a condition characterised by abnormal sexual desires involving extreme or dangerous activities.

The problem started in his teens when he experienced sexual pleasure riding his uncle's bicycle.

He bought his own bicycle but reported getting more gratification by riding someone else's.

Later in his teens, his fetish moved on to motorcycles. He would usually take someone else's for a ride and then put it back.

He had been in and out of jail since 1996 for stealing offences, and had attempted suicide several times.

Smell of women's armpits (2008)

A man, 36, was fixated with wanting to smell women's armpits.

Over 15 months, he molested 23 women - from girls as young as nine to women in their 50s.

Apart from his tendency to sniff his victims' armpits, he also touched a 13-year-old's breasts, placed his hand up her skirt and exposed himself to a 53-year-old cleaner.

The man stalked his victims and followed them into lifts.

He would strike inside the lifts, at staircase landings and even at their homes.

The man, who is mildly retarded, was sentenced to 14 years of preventive detention, a jail term for hardcore prisoners with no chance of parole.

He was also sentenced to 18 strokes of the cane.

Women's underwear (2008)

A Singaporean professor teaching at the Electronic Science and Technology University in China was placed on probation for 12 months after he was caught stealing women's underwear, which aroused him sexually.

The 39-year-old, who is married, was caught at a Nanyang Technological University hostel, where he had returned to during his leave from work.

The underwear he had stolen had been left on railings outside hostel rooms.

His lawyer said he had been sexually aroused by undergarments since he was 14.

Smelly shoes (1999)

A 43-year-old caught twice with dozens of used shoes explained to the court that he was addicted to their smell.

Comparing his urge to smell old shoes to that experienced by drug addicts, the lorry driver said he typically took shoes that had been left outside flats.

The man kept the shoes until the smell ran out.

Then he either gave them to the Salvation Army or tried to return them.

The judge, who took into account two other similar charges against him, sentenced him to a total of 25 weeks' jail.