It might not look like the most likely venue in London for a rave to be held.
But this Northern Line train appears to have been transformed into one of the liveliest parties in the capital.
A hilarious video posted on YouTube yesterday shows a Tube train carriage filled with party-goers as dance music is blared out of speakers.
"You coming inside the club?" a man with a clipboard playing the role of a bouncer asks bemused passengers.
Another member of the entourage then warns that people will not be allowed "into the club" - which is separated by a red rope across the carriage - if they are carrying drugs as he appears to search someone with a torch.
"If it was up to me I'd let you in the club," he tells the passenger filming the episode.
The doorman adds: "It's a party tonight, OK. If you wait one minute you can come in. It's one in, one out, OK?"
The club carriage includes balloons and a bare-chested man wearing fake armour who dances throughout the video.
Other passengers seem baffled by the stunt - but several see the funny side as they board the train as it pulls into an Underground station.
The video has already 45,000 views since it was posted on Saturday by a user who wrote the caption: "Stepped on the northern line and found this!"
