Is it possible to perform a quickie oral sex on a man aboard an Armadale Express train during rush hour?

This Chinese couple on another train in Kaohsiung appeared to be having oral sex, but at least the girl's head was covered by the man's jacket.

This one is an obvious prank video.

That is the question that operators of the train will attempt to provide an answer in response to the claim of a train rider that she saw a young woman gave an older man fellatio at about 5:30 pm on Thursday on the Armadale line.

The female passenger, who identified herself as Kerry, recounted to radio station 6PR on Friday morning the impromptu sex show she witnessed when the train stopped at Kelmscott, and the sex act went on until she alighted in Armadale. She added transit guards also saw what happened but did not step in.

She was just a few feet away from the couple, while there were two other people beside the pair, drinking while the oral sex was happening. There were also two school children in the same carriage, according to Kerry, who saw the live sex.

"We all make jokes about the Armadale line, it is so bad, and once again it's just proven to me that it's just getting worse and worse," she said, quoted by News.com.au, referring to drunks boarding the train in the morning.

To verify if Kerry's claim is true or the product of her imagination, operators of the rail system are trying to access the CCTV to check if such an incident really happened.

"This is the sort of stuff people should not have to put up with, whether you're in the Hay Street Mall, or in Northbridge or on a train, so we'll be looking into it," News.com.au quoted David Hynes of the Perth Transport Authority.

However, it would take the train operator some time to go through the CCTV footage because the video could only be downloaded directly from the train's hard drive, which is only possible when the train is not running.

"I don't want my children on the Armadale line ... it's just so bad, it's getting worse and worse," Kerry said.

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