It's a dubstep song and then beginning is three women introducing themselves as someone else and after there done saying there names the song says feed me. I want to know what movie it is from?

"Feed me." is heard in two movies, both titled "Little Shop of Horrors". There is a b&w version and a color musical.

Here's the first one:
The Little Shop of Horrors (1960) - Original "Feed Me" -scene - YouTube (http://www.youtube.com/watch?v=Mt9wVzkPwrY)

Here's the musical number:
The Little Shop of Horrors (1986) - Feed Me, Seymour (Git It) - FULL - YouTube (http://www.youtube.com/watch?v=VsmngHziLrs)