An outraged motorcyclist has been forced to stick a handwritten note to his bike after a local tried to steal it from his front yard during kerbside pickup. 

Queensland man Alen Gartner parks his registered motorbike in the front yard of his home at The Gap, in Brisbane's northwest. 

Despite the bike having a number plate and sitting within his property, Mr Gartner said he was forced to stick a note on his motorbike after a man tried to steal the bike during the suburb's kerbside pickup on Monday. 

Mr Gartner shared a picture to a community Facebook group of the handwritten note 'not for curbside[sic] cleanup' taped to his bike. 

He slammed 'feral' locals for their behaviour during council cleanup and claimed the man also assaulted his girlfriend.  

'I just want to say how feral people can be at curbside[sic] cleanup time,' Mr Gartner wrote. 

'We had a man in a silver falcon ute with a car trailer who attempted to steal my motorbike off the front property and also attempted to assault my girlfriend.

'I didn't know it was so hard to be decent during this period and I didn't know it was so hard to use a brain and realise that a registered motorcycle wouldn't be for curbside[sic] pickup.' 

Mr Gartner said the pair had to write a note to prevent the misunderstanding from happening again. 

The post received more than 70 comments, with many agreeing the man was trying to steal the bike. 

'Yeah, he was trying to nick it,' one local commented. 

Another local added: 'Remind me again why we love kerbside pickup. Remind me again why we tolerate ferals trolling our streets. 

'Yes there are some genuine people but there does seem to be an ever increasing amount of thieving lowlifes this year. Bikes, basketball hoops, guitars but a motorbike takes the prize.' 

Mr Gartner said the man had 'several' bicycles and other kerbside items already in his trailer. 

When Mr Gartner confronted the man attempting to steal his motorbike the man supposedly replied: 'It was out the front therefore it's kerbside pickup'. 

Brisbane City Council stipulates kerbside collection is for large unwanted household items that are too big for wheelie bins. 

Accepted items include, bath and laundry tubs, bicycles, sporting equipment, carpet, rugs, televisions, computers, furniture, fridges, stoves, small household appliances and wood products less than 1.5 metres in length.