One time Sk8r chick Avril Lavigne has told MTV she was more than a little tipsy when she wrote the first single from her third album, 'The Best Damn Thing'.

"I wrote Girlfriend when I was drunk!" she admitted. "I've never had so much fun in the studio. I feel this is my best record. It was totally different, so much fun."

And she confessed you can also hear the effects of a few glasses of booze on another new track.

"I was wasted, when I sang I Can Do Better. You can tell I'm drunk in it, I'm laughing," she told us.

"What's really cool about (it) though, is we wrote it, and then I ran into the booth and I sang. I laid down the verse in that take, which you would call my demo. We used my demo!

'The Best Damn Thing' is due to hit the shops on April 17.

'SLJ'