From Beyonce's "Irreplaceable",

1.) Dismissed, dumped, broke off

2.) "Step aside," as in when a person is dumped: means to get out of one's face and life so that a new partner can be established.

3.) Indicating where the door is located, even if it is not actually located to the left -- "To the left" indicates that your exit is expected right fucking now.

Anatidaephobia is defined as a pervasive, irrational fear that one is being watched by a duck. The anatidaephobic individual fears that no matter where they are or what they are doing, a duck watches.

Anatidaephobia is derived from the Greek word "anatidae", meaning ducks, geese or swans and "phobos" meaning fear.

an expression Beyonce uses in her song "Irreplaceable" (written by NeYo) meaning homeboy can get his stuff, put it in a box, and leave. This signals the end of a relationship and that the man should pack everything he owns in a box and move to the left, out the door. Neyo described this expression to Tyra on the Tyra Banks show.

to describe when your more progressive (or liberal) than someone on the political spectrum

also used in the song "leavin'" by jesse mccartney. maybe he used it as a nod to beyonce

From Beyoncé's hit song irreplaceable

To the left is a reference to the fact that woman have no rights