'Friday': The worst song ever?

13 year old Rebecca Black is this week's 'Talk of Twittter'

The American teenager is trending after her single 'Friday' was posted by the US TV station Comedy Central under the title 'Songwriting Isn't For Everyone'.

The video has been viewed over 4 million times and now the debate is on - is it the worst song ever recorded or just a bit of fun.

What's the song about - a teenager who can't decide whether to sit in the front of her friend's car or the back.