Piers Corbyn and his mob of anti-maskers have a released a song filmed on a tube train railing against having to wear a piece of cloth on their face for a few minutes.
The one sentence chant - of which Corbyn appeared to forget the words to at one point - was videoed on the London Underground.
It is hugely embarrassing for Sadiq Khan, who is desperately trying to encourage passengers to start masking up on the Transport for London trains.
The composer behind the song is not fully known, but the video starts with a well-spoken man reading The Light, which is an anti-lockdown publication.
He suddenly looks up, as if awoken from an unspoken malaise and furiously discards his tatty white mask.
The man looks plaintively around the carriage, which is hushed awaiting for him to impart his thoughts.
Then he declares: 'You know, wearing a mask is like trying to keep a fart in your trousers.'
The very basic music video was filmed on the London Underground by the anti-mask mob
Corbyn seemed energized by the singsong, which had few lyrics and an uncomplicated tune
Corbyn was seen peeling off a TfL sticker requesting people wear a mask when travelling
He stands up to reveal another unmasked lady who joins in repeating the mantra.
Then as he walks through the carriage he meets three other people, which includes Corbyn, dressed in his familiar t-shirt and suit jacket outfit.
They all join in with gusto and meet others as they pass through the train, before a slight change to the lyrics throws the ditty in a slightly new direction.
Now they chant: 'What is it like? It's like trying to keep a fart in your trousers.
There was wide ridicule at the song on Twitter from users including broadcaster Jeremy Vine
Professor Whitty had been giving a speech on cholera at a lecture theatre believed to be in London. But it was hijacked by Corbyn and his conspiracy crew, who cut the event short by refusing to let him finish his talk
He berated him with questions before launching into thuggish chants of 'arrest Chris Whitty' and calling out what he claimed was 'fascism in Europe and the world', while the professor watched on politely
Former Labour leader Jeremy's older brother, 74, cut short the Chief Medical Officer's speech on cholera before blasting him with insults
