milk train 

a lactating woman. a woman giving breast milk from enlarged breasts.

Damn that kid is still on the milk train (child is still breastfeeding)
Ride the milk train. (fuck a lactating woman)

milk train by Twisted Fixtures July 31, 2007

milk train 

something someone says when honking the boob, or giving a titty twister; another word for titty twister or nurple

person 1: *walking down the street*
person 2: stops and says "O My Golly G Willikers!!! What is that over there?!?!" *points to something off in the distance
person 1: *looks over in the distance and is distracted*
person 2: reaches over and pinches person 1's nipple in the process of a titty twister while exclaiming "MILK TRAIN!!!"

milk train by One of the other Alexes February 13, 2008

Riding the Milk Train

Having sex with a lactating woman (still full of breast milk)

"The milk train is comin round any time of night or day With two big headlights shining so you know the way
Picking up steam rolling down the track
Squirtin out juice on the caboose.
The brakeman's havin a heart attack"

"Man, I was riding the milk train last night. And I wasn't the only one who shot off. Don't go round hungry!"

Riding the Milk Train by Twisted Fixtures July 31, 2007