Followers of British Labour leader Jeremy Corbyn would have been forgiven for thinking the avowed socialist had gone entirely off the reservation, as his official Twitter feed turned into a perverse and often baffling tirade.
In rapid-fire succession, Mr Corbyn appeared to tweet: "Here we... here we... here we f---ing go!!!" before declaring "davey cameron is a pie", "f--- trident" and "Straya c----". They were read by up to 386,000 followers.
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Posted at 9pm on Sunday night British time, the tweets were quickly deleted but sparked a fervent and at times celebratory reaction online. It was assumed Mr Corbyn's account had been hacked, although no further comment had been posted from his Twitter account two hours later.
The tweets that appeared on Jeremy Corbyn's Twitter account. Photos: Twitter: @stephencgrant
The tweet "f--- trident" refers to the British Trident program for the development and operation of the country's nuclear weapons arsenal.
Mr Corbyn, who favours nuclear disarmament, is at odds with most of his Labour colleagues on whether to abandon support for the program.
The inclusion of a reference to "Straya", an internet slang term for Australia, led many to speculate that the hacker hailed from Down Under.
Australian internet personality Dan Nolan, who memorably co-created a plug-in that replaced photos of Tony Abbott with pictures of cats, denied responsibility.
I'm working under the assumption that the whole of Australia hacked Corbyn simultaneously.— Ian Rennie (@theangelremiel) January 10, 2016
I did not hack corbyn's twitter account stop accusing me— danuary (@dannolan) January 10, 2016
If there is a God, UK political journos will today ask Corbyn his thoughts on Aussie flag capes, ute burnouts, double-plugger thongs and VB— Josh Butler (@JoshButler) January 10, 2016
Mr Corbyn's relatively radical position on the left of British politics led some to joke that perhaps he had simply decided to speak what was on his mind.
The 66-year-old was elected leader in September following the departure of Ed Miliband, who led the party to a crushing defeat at the May general election.
Since his rise to power, Mr Corbyn has opposed military intervention against Syria and has signalled that Labour will campaign in favour of Britain remaining in the European Union, which is to be the subject of a national referendum.
i hope corbyn wasn't actually hacked he just had some things he needed to get off his chest— miv (@lastfIowers) January 10, 2016
The British Guardian reported that a spokesman for Mr Corbyn declined to comment.