Police wish to identify the two men who appear in this footage

A THUG who urinated ­between a stationary train and a platform then abused and tried to fight a commuter who told him to use a public toilet.

Police want to speak to the thug and an ­equally abusive accomplice.

The incident happened after the Pakenham-bound train pulled into Flinders St station at 11.50pm on November 22.

A male passenger opened the doors and urinated between the carriage and platform, prompting a disgusted fellow commuter to tell him to use a public toilet.

The thug confronted the passenger by leaning inches from his face and telling him to move.

He was quickly joined by a tattooed scrawny accomplice who also abused the passenger and grabbed his arm.

Both appear to tell the man to get off at the next ­station to "sort it out".

A fellow passenger on the train filmed the thugs' threats and even told them to "smile for the camera".

The suited commuter refused to back down and the thugs then got off the train at Southern Cross station.

The man who urinated is described as Caucasian, in his late teens, about 180cm tall with short dark hair, broad shoulders, crooked teeth and "weaved" tattoos on his arms.

He wore a white T-shirt with black "Zoo York" wording.

His mate is Caucasian, in his late teens, slim with dark brown hair with a side fringe and tattoos. He was wearing a white and black singlet and black and orange baseball cap.

Any witnesses are urged to contact Crime Stoppers on 1800 333 000.

jon.kaila@news.com.au