Donald Trump has found himself in the unlikely situation of having to fend off an onslaught of tweets from women live-tweeting their periods at him.

The outspoken business tycoon is being targeted on Twitter after clashing with Fox News host Megyn Kelly during the GOP debate over his disparaging comments about women.

In a discussion about their exchange afterwards, Trump told CNN’s Don Lemon: “You could see there was blood coming out of her eyes, blood coming out of her wherever,” a comment that many understood to be him trying to insult Kelly by suggesting she was challenging him because she was on her period.

Trump denied this was the case and caused even more of furore when he tried to defend his comments by claiming anyone who believed he had been talking about periods must be a "deviant".

“I was going to say, nose, and/or ears. Because that’s a very common statement,” he said. “Blood flowing out of somebody’s nose, and remember she had great anger when she was questioning me.”

But his claims have done little to quell the social media users currently tweeting at Trump with details about where they are in their cycle to prove that menstruation can never be used as an insult against a woman.

In typical Trump fashion, he also branded the right wing blogger who cancelled an upcoming performance over his perception that Trump was referring to periods a “total loser”. He has yet to reply to the new #periodsarenotinsults campaign, launched by Femsplain founder Amber Gordon, although his Twitter track record suggests we won't have to wait long for a response.