Lily Allen Calls George Bush An A**hole & C*nt

British singer Lily Allen has launched an astonishing drunken rant during a concert in San Diego, California, calling George W Bush an "a**hole" and claiming she is "probably bisexual".

The 21-year-old turned angry after guzzling beer and cider onstage during her performance at the city's House of Blues last week.

She said, "George Bush is an a**ehole and a c*nt" before also directing her vitriol at Tony Blair.

Allen then claimed she was bisexual because she was sick of men with "tiny d**ks", reports British newspaper The Sun.

A concert-goer tells the newspaper, "Lily got really drunk on stage.

"She then started calling Bush names and the audience went a bit quiet. She also said that San Diego has the best crack whores she has ever seen and that she was thinking of becoming a lesbian."

The singer has hinted she is considering quitting her US tour - an attempt to crack the lucrative Stateside market - because she's bored. She writes on her MySpace page, "Is it really important to break America? I'm bored."