Watch out for that bus!

Urban Dictionary defines throwing someone under the bus as "to sacrifice some other person, usually one who is undeserving or at least vulnerable, to make personal gain."(Granted, Urban Dictionary isn't usually a reference I'd use.)

If you make a habit of doing this, it is going to drive me crazy. Beyond that, it makes me lose respect for you. It doesn't even have to be me rolling around under there. I can't deal with seeing it done to other people. The bottom line is that we should take responsibility for ourselves. If it's not your fault, stop wasting time with tattling. Simply fix the problem and move on.