I'm Riding That Train, Reading That Book. . . Edit Meaning

1.

An expression which originated during a drunken late-nite discussion of the origins of expressions. It means, "I see what you're saying, where you're going with that."

Drunk person A: "Dude, you know what I mean?!"

Drunk person B: "Totally, Dude. I'm riding that train, reading that book."

2.

Same as saying, "I feel you."

Cool Person A: "So then, I told the guy that there was no way I would ever consider his lame-ass job, you know?"

Cooler Person B: "Yeah, man. I'm riding that train, reading that book. . ."

See cool, totally, definitely, yah