M-train 

v - to drop from a difficult major like engineering or a science and switch to mangement.

See also Tech Trolley

Most of my friends dropped Computer Science and hopped on the old M-train.

M-train by Anonymous November 5, 2003

M-train 

a girl's period.

she's crazy, and to make it worse, her m-train hasn't come yet...let's ditch her and egg some random persons house because we're brainless idiots!

M-train by dude...somebody knows! November 6, 2003

The M-Train 

noun - Sudden need to masterbate, causing disappearance to the bathroom.

"Where's Chris?"
"He saw that girl's booty and hopped on the M-Train."

The M-Train by Max Landis February 26, 2004

The "M" Train

1)n. To get high on Marijuana.

2)adj. To be high on Marijuana

This term was originally used by students at Reseda High School.

1) Hey Guille, lets get on THE "M" TRAIN.

2) Are you on THE "M" TRAIN?

The "M" Train by MartinReseda1992 January 3, 2009

I'm riding that train, reading that book. . . 

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."

I'm riding that train, reading that book. . . by ripcurlgirl September 15, 2004

I'm riding that train, reading that book. . . 

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. . ."

I'm riding that train, reading that book. . . by InThaNo August 3, 2007

M De-leanardo Taint Tickler

When you're talking a shit in a New York city dive bar and get your balls/taint bit or tikled by a giant NYC RAT.

I was taking a shit and got "M De-leanardo taint tickler" while taking a dump.

M De-leanardo Taint Tickler by RoyalGun November 22, 2025