Duran Duran is rarely forthcoming about the meanings behind their songs, but this appears to be about the evil part of you taking over and consuming your body. The snake represents that other side of you.
Suggestion credit: Jenny - Toronto, Canada
In 1984, Duran Duran released The Book Of Words, which contained lyrics to their songs. In the book, Simon Le Bon explained, "Borderline might be one between the conscious and subconscious minds." He admitted in later interviews that it was a reference to tantric sex.
Suggestion credit: Shine - Perth, Australia
This was inspired by Jim Morrison's lyrics for The Doors' albums. Simon Le Bon told Spinner: "There are times when I get into books and things and some of that comes up on the record or I'll get into a certain artist. An obvious example of that is 'Union of The Snake' and 'Hungry Like The Wolf' are very much related to Jim Morrison and his lyrical ideas."
When the band got back together in 2002, bass player John Taylor dubbed it the "reunion of the snake."