John Oliver knows just how much US President Donald Trump likes his television talk shows and has been buying ad time to air infomercials targeted to educate him. On 9 April, the Last Week Tonight host offered a preview of the latest advertisement created for Trump, this one to explain to him why sexual harassment was wrong.

Earlier in April, talk show host Bill O'Reilly and the Fox network found themselves neck-deep in scandal after a report suggested that five women were allegedly paid a total of $13m (£10.4m) after they accused the 67-year-old of sexually harassing them. According to The New York Times, O'Reilly engaged in "verbal abuse, lewd comments, unwanted comments" and "phone calls in which it sounded as if [he] was masturbating".

The news triggered heavy criticism all around and numerous advertisers pulled out of the show, but Trump opted to stand in support of the TV host claiming he "didn't do anything wrong".

Keeping this in mind, Last Week Tonight decided to buy airtime during the Fox News show for its latest advertisement featuring the 'Catheter Cowboy'.

"Bill O'Reilly needs advertisers, and Donald Trump needs to understand sexual harassment," Oliver explained of the ad which has yet to be approved for airing on Fox.

"I'm a professional cowboy and I use catheters, and there's two things I know," the ageing Catheter Cowboy says in the video. "I don't like pain when I cath, and repeated unwanted sexual advancements or obscene comments in the workplace constitute workplace harassment!

"If there's a power disparity between the two parties, well, that's about as inappropriate as lubricating a catheter with hot sauce, partner. Why would you do that?" he adds.

Watch the latest Catheter Cowboy commercial below:

Oliver had first made known his plans to start releasing commercials directed at Trump, back in February after the president made it obvious that he got most of his information from specific news shows.

"As we now know, he watches morning cable news for information, so we've actually created a series of commercials in an attempt to bring him up to speed on some information he may lack," the show host said.

"Until we're shut down, we're prepared to educate Donald Trump one by one on topics we're pretty sure he doesn't know about," he added. The first video featured the cowboy talking about the nuclear triad, global warming and the Geneva Convention. In the second ad he goes on to explain the need for a proper health care system.

Donald Trump
Donald Trump holds up signs at a campaign rally in Lakeland, FloridaMike Segar/ Reuters