(Thanks to Paul Boyd)

Four couples are preparing to stage a bed-in in a Liverpool shop window as part of a 60th birthday celebration for John Lennon.

Paying tribute to the famous ``Bed-In for Peace'' staged 31 years ago by John and Yoko, the four couples will hop into their double beds Friday (March 10) and begin a lie-in competition to see who can stay there the longest.

Passers-by can check their progress in a shop window at the city's Cavern Walks shopping center, close to the legendary Cavern Club.

Can't make it to Liverpool for the event? You can watch the competition live on the Internet at www.yourliverpool.com .

Organizers say the couples will only be allowed to leave their beds for a 10 minute ``comfort break'' every two hours and will have only a radio -- and each other -- for entertainment.

The two who stay in bed the longest will win a 10,000 pound prize and a trip to Montreal to stay in the same bedroom where John and Yoko's ``Bed-In'' was captured for history by the world's media.