Fergie told The Daily Mail
July 31, 2009 that when recording her vocals for The E.N.D.
, she found herself inspired by some of the singers she grew up with. The singer added that for this song, she "transported myself back to 1985, when I was 11 and saw Madonna in concert for the first time on the Virgin tour. I took on her persona in that song as a homage." This might explain the line, "Right at the Borderline
is where I'm gonna wait for you."