Stanley Thornton, The 30 year old ‘adult baby’

Like any other baby, Stanley sleeps in a crib, wears diapers, and loves nothing better than being comforted by his mother as she bottle feeds him.

Except Stanley Thornton is 30-years-old – and his ‘mother’ is really his room-mate.

Mr Thornton seeks comfort in being treated like a baby, a condition known as paraphilic infantilism.

The ‘adult baby’ lives out his fantasies at his California apartment, where he has built himself a giant crib, play pen and even a man-sized high chair.

Childhood comforts: Stanley Thornton is bottle-fed by his room-mate Sandra Diaz, a former nurse

He spends his days playing with Lego as he sucks on his pacifier, and being spoon or bottle-fed by his room-mate Sandra Diaz, who willingly acts as his mother.

Tonight viewers will see inside his bizarre alternate world as he features in a National Geographic programme, ‘Taboo: Fantasy Lives’.

He said: ‘For some people being an adult baby is a sexual fetish for them, but for most of us it’s just, you know, you’re doing it to relax, you come home from work, you change into baby mode, you put away your adult stuff and everything goes on hold.’

He first began his return to childhood when he was 14, as a way of coping when he started wetting the bed after being abused as a boy.