Mexico City Metro has gone viral after installing a 'penis seat' on one of its trains. The stunt – which is part of a campaign against sexual harassment – has made more than a few commuters feel extremely uncomfortable.

The campaign video shows people's reactions as they sit on the chair, which has been moulded into the shape of a man's chest and groin area. Some sit down without noticing, only to jump up as soon as they realise what is between their legs, others try to cover it up with their jackets in order to sit down and some just look away in disgust – but this is the whole point of the campaign.

Above the seat, a sign reads: "It's uncomfortable to sit here but it doesn't compare with the sexual violence that women suffer in their everyday lives. 9 out of 10 women in Mexico City have been victims of some form of sexual violence."

So far the reception has been mixed. The comments under the YouTube video make for interesting (and somewhat depressing) reading, some of whom branded the campaign "sexual harassment for men".

"Imagine if they created a vagina seat. This is disgusting, f**king 3rd wave feminism," wrote Jon Slater.

"So pranking men into sitting on a phallus - thereby harassing them - raises awareness for sexual harassment against women? Woman logic right there," said Mark Heckit.

"I can't wrap my head around how idiotic this "message" is," said Evan2281. "Maybe 9 in 10 women wouldn't get assaulted if the Mexican authorities actually cared enough to do their jobs. But no, let's mold a plastic penis on a subway to make a point(no pun intended). Dumb shit.﻿"

"It is harassment of men," said a user writing under 'Proud Guy'. "Men need to organise and promote their issues as a lobby group, to balance the obvious power of feminist groups.﻿"

However, Holly Kearl, who founded the US-based website Stop Street Harassment, argued that it's positive to see a campaign take the responsibility away from women and see a move away from victim-blaming.

"Too often initiatives around women's safety focus on what women should or should not do, so it is refreshing to see a creative campaign aimed at men," she said UN Women Safe Cities Global Leaders' Forum in Mexico City last month.

It's definitely an attention-grabbing stunt that we approve of, especially if it gets more eyes on that shocking statistic.

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