An amusing video has emerged of a man turning up to a stag party in full Ali G regalia after being pranked into believing it was a fancy dress event.

The footage, captured in the UK, shows the man walking sheepishly through the train carriage amid hysterical laughter.

According to the filmer, the man was due to get on at a later stop, so the other stags told him they were all dressing as Sacha Baron Cohen characters.

To the man's embarrassment, all the other stags were in fact wearing casual dress.

We took our mate to Bournemouth on his stag do, one of the lads decided to get on the train at a later stop to us... We conspired against him and we all decided that we'd go down dressed as Sacha Baren Cohen characters. Little did he know that we were not....