The Grammy Awards usually provide a nice balance of good clean fun and "Oh my god, that did not just happen." On par with the latter, here are 10 of the nuttiest acceptance speeches in the show's history:
Frank Sinatra, 1994

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At 78 years old, Sinatra was in the midst of his acceptance speech for a Grammy Legend Award when the producers cut away to commercial, according to Yahoo!. The Recording Academy later explained that Sinatra's camp had made the decision, fearing that the legendary star, at his elder age, might embarrass himself on live TV. Complex adds that Sinatra wanted to perform, too, but the Recording Academy didn't allow it.
Fun., 2013

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Accepting the award for Song of the Year for "We Are Young," Fun. lead singer Nate Ruess said: "I don't know what we were thinking, writing the chorus for this song. If this is HD everybody can see our faces and we are not very young," adding: "we've been doing this for 12 years." Jeff Bhasker, the producer behind the band's successful album, then followed up by thanking Chick Corea, Jay Z and Taylor Swift, a reference no one but the band members understood. Subsequently accepting the award for Best New Artist, Ruess chose the honest route, saying "I gotta pee to bad, so I'm gonna leave this up one of these guys."
Adele's Crasher, 2013

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As she climbed onto the stage to accept her award for Best Pop Solo, a mysterious crasher almost ruined Adele's show. Fortunately, Jennifer Lopez, who presented Adele with the award together with Pitbull, shooed the man away. He later turned out to be Ukrainian journalist Vitalii Sediuk, who spent several hours in police custody and was hit with a trespassing citation and a court date for this "stunt."