A teenager in Britain set up a Facebook group for his birthday party, but was left stunned when 21,000 people confirmed themselves as guests.
The teenager just wanted to invite a handful of close friends to his 14th birthday in October at his small flat, Daily Express reported on Monday.
His mother promptly removed the Facebook group that had her address and phone number.
The 21,000 confirmed guests was more than the population of Harpenden, Herts, where they live.
Guests have now been warned by the police to stay away from the party that has been cancelled.