"The Fear" (also known as its working title, "I Don't Know") is from Lily Allen's 2009 album It's Not Me, It's You. Originally, "Everyone's at It" was to be the lead single, but it was replaced instead with "The Fear". The song was released digitally on January 23, 2009.
http://en.wikipedia.org/wiki/The_Fear
http://en.wikipedia.org/wiki/It's_Not_Me,_It's_You
http://en.wikipedia.org/wiki/Lily
This music video is going out to Lily (not the singer), UK.
Text to this post, obtained from this song's Wikipedia page, has been slightly modified and made available here under the Creative Commons Attribution-ShareAlike 3.0 Unported License. (CC BY-SA 3.0)
https://creativecommons.org/licenses/by-sa/3.0/