During April 1969, John and Yoko sent acorns to the heads of state in various countries around the world in hopes that they would plant them as a symbol of peace. For eight months, the couple was not granted a single visit with any world leader. Their marriage ("You can get married in Gibraltar near Spain"), the first Bed-In ("Talking in our beds for a week"), the Vienna press conference ("Made a lightning trip to Vienna...The newspapers said..."), and the acorns ("Fifty acorns tied in a sack") were all mentioned in the song The Ballad of John and Yoko.
Eventually, they flew to Montreal on May 26 where they stayed in Room 1738 and 1742 at the Queen Elizabeth Hotel. During their seven day stay, they invited Timothy Leary, Tommy Smothers, Dick Gregory, and Al Capp and all but Capp sang on the peace anthem Give Peace a Chance, recorded in the hotel room on June 1. The Canadian Broadcasting Corporation conducted interviews from the hotel room.
In December 1969, they spread their message with a billboard reading "War is Over! If You Want It - Happy Christmas From John and Yoko". The billboards went up in eleven cities.
Their peace campaign was met mostly with derision, and most journalists simply dismissed it as a publicity stunt. Lennon, who was accused of doing this for money or attention, countered by saying that he could write a song in an hour and make more money than he could spending seven days in bed talking about peace.
The event was referenced in the Oasis song, "Don't look back in anger", in which leader singer Noel Gallagher sings "I'm gonna start a revolution from my bed / 'Cause you said the brains I had went to my head ". The latter lyric was supposedly said by Lennon during a taped conversation he had at his room at the Dakota Hotel. It should also be noted that the piano intro at beginning of the song is reminiscent to the piano notes in Lennon's "Imagine", thus establishing a clear tribute to the artist.
In late 2006, Billie Joe Armstrong, lead singer of Californian pop band Green Day, and his wife, Adrienne Armstrong, did a similar bed-in, featuring Billie Joe and Adrienne lying on the bed, with a poster above their heads saying "Make Love Not War" in Spanish.
On Lewis Black's Root of All Evil, comedian Andy Daly exhibits a video clip showing that he has also attempted a bed in to protest the War in Iraq. Trying to mimick Lennon and Yoko's original bed in, he climbs into the bed of an Asian woman, who sprays Daly with pepper spray.