Definitions by dude...somebody knows!

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

gumchwy 

- somebody who is short and stupid.
- somebody who has a dick the size of my pinky.

Man! That guy is such a gumchwy! I'd never wanna fuck him...it'd take 20 minutes just to find his thing!

gumchwy by dude...somebody knows! November 6, 2003