That person, usually a girl that scurrys around picking up little pieces of conversation and spreading shit about people that they picked up by eavesdropping on other peoples conversations.

A person that you send to do all of your dirty work, or someone that takes responsibility for whatever mess you've gotten yourself into (i.e. a scapegoat).

Something you would give someone to shovel out all the shit they have.

An odd way of saying "your full of shit"