Ugly, eg "Face like the back of a bus".

This is where all the cool kids hung out in Junior High. The closer to the back of the bus one is usually signifies one's social status. The losers(i.e. nerds, retards, smelly kids, etc.) sat in the front, while the cool kids(i.e. jocks, rich kids, sluts, etc.) sat in the back.

A term to describe doing a black chick from behind.. normally anal is involved somehow.

A place gays shouldn't sit.

in reference to being told something unbelievable or shocking, means to hold on and go back to what was just said; request to repeat and readdress a comment.

Phrase that means your in a fucked up situation or in a situation not common to your reputatuion

In sales, a person who enters "the be back bus" is a person who say they'll "be back," when they generally have no plans to actually come back. A common example occurs with car sales. A person may insist they are coming back to the dealership to buy the car, while they have no intention of doing so and use it as a scapegoat excuse, despite sounding very convincing. Sometimes people on "the be back bus" do actually come back, however more often than not, the be back bus crashes hard and the customer never comes back.