The post was shared on Wednesday (4 November) and Twitter users in the UK immediately began drawing comparisons to the Celebrity Juice host.
In the clip, the unnamed man can be seen interrupting a press conference being held by the Clark County, Nevada Registrar of Voters.
He angrily accuses Joe Biden of “stealing” and “covering up this election”, echoing the words of Donald Trump.
“Keith Lemon’s new character is class,” one person quipped on social media, with another adding: “Keith Lemon’s not taking it too well.”
The Lemon comparisons kept on coming as the post continued to circulate on Twitter.
“Has the Tiger King, Joe Exotic, escaped from jail or is Keith Lemon tryin to make a name for himself in the US?” one person asked.
Another stated: “Keith Lemon’s character skits are getting out of hand.”
Lemon – real name Leigh Francis – is yet to comment on the video.
The clip was posted after it was announced Nevada had temporarily suspended vote counting in the 2020 presidential election.
There will not be an update on the count until Thursday morning at 9am PT, which is 5pm in the UK.
Biden is currently within touching distance of victory over Trump having flipped the key states of Michigan and Wisconsin and retained a lead in Arizona.
Follow live updates here.