anonymous January 14th, 2008 10:09PM  
When she mentions her "daddy" in the song she does actually mean her father (Mitch Winehouse), and not her man/husband (Blake Fielder-Civil) as the other interpretation is implying.
Stories of Amy's drug abuse only hit the newspapers after the success of the album that this song is from, so it isn't about her being a "typical junkie" and needing to go to rehab because of hard drugs as the other interpretation also suggests. I imagine this may be because the interpreter knows only what the tabloid reports say about Amy and not her personal and/or songwriting history.
The album 'Back To Black', including this song, is about Amy's break up with her then-boyfriend (who is now her husband), after which she suffered from depression and turned to alcohol. Her record/management company advised her to go to rehab but her father didn't think she really needed to at that time, and after telling her producer (Mark Ronson) of that story, the tale turned into lyrics and the famous "they tried to make me go to rehab/I said no no no" line came about.

anonymous May 4th, 2008 01:15AM  
ACTUALLY.

After Amy's first album Frank (2003) was released her Manager suggested she go to rehab for her DRINKING. She was on and off with her boyfriend at the time which is why she thought she would lose her baby. She went to a rehab facility and checked out 15minutes later because she did not feel she needed it and her father advised her to get rest and lay off the liquor.

Obviously her father was wrong but the song is about her alcohol use not drug use.

anonymous August 13th, 2008 10:21AM  
The song is about when Amy messed things up with her boyfriend, Blake(who she is married to now). The other songs on the album tell the story of how she messed up and how he cheated on her also. But whenever she broke up with Blake, she turned to drink and became a manic depressive. Her record company tried to make her go to rehab but she wouldn't and her father didn't think she needed to either. When she told this story to Mark Ronson he suggested they write a song about it. A thus 'Rehab' was born! It's a modern classic.

anonymous March 11th, 2009 06:21PM  
Everyone wants her to go to rehab but she says NO!