Similar to the blame game. The blame train starts with one person blaming another for faults. This will continue along until one person is left to blame, hence, at the end of the blame train. This often occurs at work, and sometimes at home.
Manager: Mike, did you drink all the coffee?
Mike: Nope, that was Jeff.
Manager: Jeff, did you drink all the coffee?
Jeff: No, I'm pretty sure Bob did.
Manager: Bob....I know you drank all the coffee because you're on the end of this blame train. You're fired.
Bob: WTF!?
Mike: Nope, that was Jeff.
Manager: Jeff, did you drink all the coffee?
Jeff: No, I'm pretty sure Bob did.
Manager: Bob....I know you drank all the coffee because you're on the end of this blame train. You're fired.
Bob: WTF!?
by FrostyBB July 8, 2010