The single in question is called 'Here's To Never Growing Up' — which is such an obvious Avril Lavigne title it's a wonder she hasn't used it before — and the existence of the clip was announced via the medium of Twitter.
"SO STOKED to share a clip of my new single & a chance for you to be in the lyric video!" she mused.
You can listen to the 14-second clip below and if you 'head over' to her Facebook page you can indeed sign up to be in the lyric video. 'Wow'.[youtube]qPLVoVuPj3M[/youtube]